Ergotron Dual Stacking Monitor Arms

Introducing the LX Pro—an evolution of the industry-leading LX design. LX Pro combines everything you love about the LX arm with modern enhancements that further streamline installation and maximize ergonomics. It's bound to become the preferred solution when upgrading a workstation. Experience the perfect blend of style and functionality. An added cover safely routes cords, reducing cable clutter for a sleek look while preventing snags when an arm’s in motion. Set the tension level once to counterbalance an arm with its monitor; reference the indicator for quick setup of multiple arms. Modular construction makes it easy to adapt with accessory add-ons and conversion kits as technology shifts and requirements change. Accommodates different monitor sizes and configurations with various attachment options and accessory kits. Customizable positioning reduces strain and promotes better posture, with increased tilt range for stacked monitors. Adjust monitor position easily with one-touch Constant Force™ lift technology for an optimal viewing experience that enhances focus and efficiency. The LX line has been a trusted choice in ergonomic workspace solutions for over 20 years; recognized for its quality engineering, flexibility, and innovative Constant Force lift technology. The new LX Pro carries this legacy forward with a modern design, easier installation, and improved ergonomics. With added adaptability for a wide range of monitor setups, LX Pro continues Ergotron’s commitment to solutions that evolve with changing workplace needs..Premium Dual‑Monitor Arm – Professional‑grade articulating mount designed for ergonomic dual‑screen workstations..Supports Two 24" Monitors – Ideal for productivity‑heavy setups such as finance, design, programming, and multitasking..13" Smooth Height Adjustment – Vertical lift enables precise sitting or standing desk positioning for improved comfort..Durable Matte Black Design – High‑quality aluminum and steel construction delivers long‑term stability with a sleek appearance..Full Motion Articulation – Each arm offers 85° tilt, 360° rotation, ~180° swivel, and pivot for portrait or landscape orientation..VESA Compatible – Fits 75 x 75 mm and 100 x 100 mm mounting patterns for wide monitor compatibility..Enhanced Cable Management – Built‑in cover routes cables neatly, reducing clutter and preventing snags during movement..Constant Force Lift Technology – Enables effortless one‑touch monitor repositioning for optimal ergonomic viewing..Rotation‑Limit Feature – Optional stop helps prevent arm movement from hitting nearby walls or partitions..Modular & Adaptable – Compatible with add‑ons and conversion kits for evolving monitor configurations..Quick Multi‑Arm Setup – Tension‑level indicator allows faster matching across multiple arms during installation..10‑Year Manufacturer’s Warranty – Backed by long‑term coverage and Ergotron’s trusted engineering legacy.

Create a fully adjustable side-by-side monitor configuration that lifts both LCD screens simultaneously to where they’re easier to see while reclaiming valuable desktop space..Monitor Mount & Stand Type and Use: Desk Mount.Monitor Size Supported & Number of Arms (If more than 1): 25", Dual Direct Arm.Adjustable Minimum and Maximum Height (Inches): 13".True Color & Material of Item: Polished Aluminum.Articulation; Pivot Angle (Degrees), Tilt Angle (Degrees), Rotation Angle (Degrees), Swivel Angle (Degrees) & Viewing Angle (Degrees): Tilt Angle 30°, Rotation Angle 360°.Weight (lbs.): 13.96 lbs..Mount Bracket or VESA Pattern: MIS-D

Introducing the LX Pro—an evolution of the industry-leading LX design. LX Pro combines everything you love about the LX arm with modern enhancements that further streamline installation and maximize ergonomics. It's bound to become the preferred solution when upgrading a workstation. Experience the perfect blend of style and functionality. An added cover safely routes cords, reducing cable clutter for a sleek look while preventing snags when an arm’s in motion. Set the tension level once to counterbalance an arm with its monitor; reference the indicator for quick setup of multiple arms. Modular construction makes it easy to adapt with accessory add-ons and conversion kits as technology shifts and requirements change. Accommodates different monitor sizes and configurations with various attachment options and accessory kits. Customizable positioning reduces strain and promotes better posture, with increased tilt range for stacked monitors. Adjust monitor position easily with one-touch Constant Force™ lift technology for an optimal viewing experience that enhances focus and efficiency. The LX line has been a trusted choice in ergonomic workspace solutions for over 20 years; recognized for its quality engineering, flexibility, and innovative Constant Force lift technology. The new LX Pro carries this legacy forward with a modern design, easier installation, and improved ergonomics. With added adaptability for a wide range of monitor setups, LX Pro continues Ergotron’s commitment to solutions that evolve with changing workplace needs..Premium Dual‑Monitor Mount – Professional articulating arm designed for ergonomic dual‑screen workstation setups..Supports Two 24" Monitors – Ideal for finance, design, coding, and multi‑task productivity workflows..13" Smooth Height Adjustment – Vertical lift enables precise positioning for seated or standing desk comfort..Durable Dark Gray Finish – High‑quality aluminum and steel construction ensures long‑lasting stability and a modern, professional look..Full Articulation Range – Each arm provides 85° tilt, 360° rotation, ~180° swivel, and pivot for portrait or landscape flexibility..VESA Standard Compatible – Supports 75 x 75 mm and 100 x 100 mm patterns for wide monitor compatibility..Integrated Cable Management – Built‑in routing cover keeps cables organized, reduces clutter, and prevents snags..Constant Force Lift Technology – Enables effortless, one‑touch monitor adjustment for improved ergonomic alignment..Rotation‑Limit Safety Option – Optional stop helps prevent arm movement from hitting walls or partitions..Modular & Upgrade‑Ready – Compatible with add‑ons and conversion kits as monitor configurations evolve..Quick Multi‑Arm Setup – Tension indicator allows faster, consistent adjustments across multiple arms..10‑Year Manufacturer Warranty – Backed by long‑term reliability and Ergotron’s proven engineering legacy.

Transform your workspace with the Ergotron LX Pro Dual Side-by-Side Monitor Arm. Designed for modern professionals, this sleek and durable aluminum arm supports two monitors up to 27", offering unmatched flexibility and ergonomic comfort. With Constant Force™ technology, you can effortlessly lift, tilt, pan, and rotate each screen for optimal viewing angles that reduce strain and boost focus. The side-by-side configuration maximizes desk space while the streamlined cable management keeps your setup clean and organized. Whether you're working, designing, or multitasking, the LX Pro delivers style, performance, and reliability—all backed by a 10-year warranty. Upgrade your desk and elevate your productivity..Built for dual monitors with side-by-side desk arm configuration.Supports screens up to 27" for efficient multitasking setups.Raises monitors with 13" lift for ergonomic viewing comfort.Crafted from durable aluminum with a sleek black finish.Allows 360° rotation, 85° tilt, and full swivel for flexible positioning.Clears desk space with compact base and clean cable routing.Weighs 13.7 lbs. for sturdy yet manageable installation.Fits VESA 100 x 100 mm and 75 x 75 mm mounting patterns.Measures approx. 17" H × 20" W × 5" D for space-saving design.Meets ANSI/BIFMA standards for quality and air safety.Ergotron 10-year limited warranty.

Introducing the LX Pro—an evolution of the industry-leading LX design. LX Pro combines everything you love about the LX arm with modern enhancements that further streamline installation and maximize ergonomics. It's bound to become the preferred solution when upgrading a workstation. Experience the perfect blend of style and functionality. An added cover safely routes cords, reducing cable clutter for a sleek look while preventing snags when an arm’s in motion. Set the tension level once to counterbalance an arm with its monitor; reference the indicator for quick setup of multiple arms. Modular construction makes it easy to adapt with accessory add-ons and conversion kits as technology shifts and requirements change. Accommodates different monitor sizes and configurations with various attachment options and accessory kits. Customizable positioning reduces strain and promotes better posture, with increased tilt range for stacked monitors. Adjust monitor position easily with one-touch Constant Force™ lift technology for an optimal viewing experience that enhances focus and efficiency. The LX line has been a trusted choice in ergonomic workspace solutions for over 20 years; recognized for its quality engineering, flexibility, and innovative Constant Force lift technology. The new LX Pro carries this legacy forward with a modern design, easier installation, and improved ergonomics. With added adaptability for a wide range of monitor setups, LX Pro continues Ergotron’s commitment to solutions that evolve with changing workplace needs..Premium Dual‑Monitor Arm – Professional articulating mount built for ergonomic home or office dual‑screen setups..Supports Two 24" Monitors – Ideal for productivity workflows such as finance, design, coding, and multitasking..13" Vertical Height Adjustment – Smooth lift range allows precise positioning for sitting or standing desk comfort..Clean White Finish – Durable aluminum and steel build offers long‑lasting stability with a modern, professional look..Full Motion Flexibility – Each arm provides 85° tilt, 360° rotation, ~180° swivel, and portrait‑to‑landscape pivot..VESA Compatible – Works with standard 75 x 75 mm and 100 x 100 mm mounting patterns for wide monitor compatibility..Enhanced Cable Management – Integrated routing cover keeps cords organized, reduces clutter, and prevents snags..Constant Force Lift Technology – Enables effortless one‑touch monitor adjustment for improved ergonomic alignment..Rotation‑Limit Safety Option – Built‑in stop helps prevent arm contact with walls or partitions..Modular, Adaptable Design – Compatible with accessory add‑ons and conversion kits for evolving monitor setups..Quick Multi‑Arm Alignment – Tension indicator simplifies matching adjustments across multiple arms..10‑Year Manufacturer Warranty – Backed by long‑term reliability and Ergotron’s proven engineering.

Introducing the Ergotron LX Pro Adjustable Desk Monitor Arm, Tall Pole—a premium upgrade to the iconic LX series. Designed for professionals who demand style, flexibility, and ergonomic excellence, this arm supports monitors up to 34" and 22 lbs. with effortless motion. Featuring Constant Force™ technology, it allows smooth lift, tilt, and rotation for optimal viewing comfort. The tall pole design maximizes vertical range, while the sleek black finish and improved cable management elevate your workspace aesthetics. With modular architecture and easy installation, the LX Pro adapts to any setup—whether you're working, creating, or gaming. Experience the next level of productivity and comfort with Ergotron..Designed as a desk monitor arm with tall pole for ergonomic screen positioning.Supports monitors up to 34" with a single-arm configuration for streamlined setups.Adjusts vertically up to 13" for personalized viewing comfort and posture support.Finished in black with durable aluminum construction for a sleek, modern look.Enables 360° rotation, 85° tilt, and full swivel for flexible screen articulation.Keeps workspace tidy with integrated cable management and compact base footprint.Weighs only 11.2 lbs., making it lightweight yet sturdy for daily use.Compatible with VESA MIS-D 100 x 100 mm and 75 x 75 mm mounting standards.Measures approximately 20" H × 10" W × 5" D for space-saving installation.Certified to ANSI/BIFMA standards for indoor air quality and durability assurance.Ergotron 10-year limited warranty.

Create a fully adjustable side-by-side monitor configuration that lifts both LCD screens simultaneously to where they’re easier to see while reclaiming valuable desktop space..Monitor Mount & Stand Type and Use: Desk Mount for Monitor.Monitor Size Supported & Number of Arms (If more than 1): 25", Dual Direct Arm.Adjustable Minimum and Maximum Height (Inches): 13".True Color & Material of Item: White.Articulation; Pivot Angle (Degrees), Tilt Angle (Degrees), Rotation Angle (Degrees), Swivel Angle (Degrees) & Viewing Angle (Degrees): Tilt Angle 30°, Rotation Angle 360°.Storage options: Not Available.Weight (lbs.): 14.5 lbs..Dimensions: 13 Height in Inches x 7 Width in Inches x 32.8 Depth in Inches.Mount Bracket or VESA Pattern: MIS-D

Upgrade your workspace with the Ergotron LX Pro Adjustable Desk Monitor Arm. Designed for professionals who value comfort and flexibility, this sleek black arm supports monitors up to 34" and up to 22 lbs. With Constant Force™ technology, it delivers smooth, effortless adjustments—lift, tilt, pan, and rotate your screen to find the perfect viewing angle. The compact base and integrated cable management help keep your desk organized and clutter-free. Built from durable aluminum and backed by a 10-year warranty, the LX Pro combines ergonomic performance with modern aesthetics to enhance productivity and reduce strain throughout your workday..Designed for single monitors with a compact desk arm configuration.Supports screens up to 34" for versatile professional setups.Adjusts vertically up to 13" for personalized ergonomic comfort.Built with durable aluminum and finished in sleek black.Enables 360° rotation, 85° tilt, and full swivel articulation.Clears desk space with a small base and integrated cable routing.Weighs only 8.4 lbs. for lightweight yet stable installation.Compatible with VESA 100 x 100 mm and 75 x 75 mm standards.Measures approx. 17" H × 10" W × 5" D for space-saving use.Complies with ANSI/BIFMA standards for quality and safety.Ergotron 10-year limited warranty.

Introducing the LX Pro—an evolution of the industry-leading LX design. LX Pro combines everything you love about the LX arm with modern enhancements that further streamline installation and maximize ergonomics. It's bound to become the preferred solution when upgrading a workstation. Experience the perfect blend of style and functionality. An added cover safely routes cords, reducing cable clutter for a sleek look while preventing snags when an arm’s in motion. Engage a built-in stop that limits the extension’s side-to-side motion to help prevent damage to adjacent walls or partitions. Modular construction makes it easy to adapt with accessory add-ons and conversion kits as technology shifts and requirements change. The LX line has been a trusted choice in ergonomic workspace solutions for over 20 years; recognized for its quality engineering, flexibility, and innovative Constant Force lift technology. The new LX Pro carries this legacy forward with a modern design, easier installation, and improved ergonomics. With added adaptability for a wide range of monitor setups, LX Pro continues Ergotron’s commitment to solutions that evolve with changing workplace needs..Premium Adjustable Monitor Arm – Single‑monitor articulating arm designed for ergonomic comfort and professional workstation setups..Supports Monitors Up to 34" – Ideal for widescreen and ultrawide displays in offices, creative environments, and home workspaces..Approx. 13" Height Adjustment – Smooth, precise vertical lift for optimal sitting or standing desk positioning..Matte Black Modern Finish – Durable aluminum and high‑strength steel construction delivers long‑term stability and a sleek, professional look..Full Range of Motion – Offers 75° tilt, 360° rotation, 180° pan, and full pivot for portrait or landscape viewing flexibility..VESA Compatible – Supports 75 x 75 mm and 100 x 100 mm mounting patterns for broad monitor compatibility..Enhanced Cable Management – Built‑in cover routes cords neatly to reduce clutter, maintain a clean aesthetic, and prevent cable snags..Integrated Rotation Stop – Optional stop limits side‑to‑side motion to help prevent contact with walls or partitions..Modular, Upgrade‑Ready Design – Compatible with accessory add‑ons and conversion kits as monitor needs change over time..LX Legacy + Modern Innovation – Built on 20+ years of trusted LX engineering with improved ergonomics and easier installation..10‑Year Manufacturer’s Warranty – Long‑term reliability backed by Ergotron.

Maximize the space available on desks by using this mounting arm for flat-screen monitors. This Ergotron mounting arm lifts screens off desk surfaces and frees up space for supplies or documents to be stored..Raise your monitor to a comfortable viewing height with this monitor arm.Supports up to 27" monitors for versatile use.Lets you easily adjust height up to 13".Made of aluminum for durability.75-degree tilt, 360-degree pan, and 360-degree rotation adjustment options enable optimal viewing.Securely holds up to 40 lbs. to fit most monitors.Compatible with the standard VESA mounting patterns: 100 x 100mm and 75 x 75mm.Comes in black finish.10-year manufacturer limited warranty.Work on more than one computer screen at a time with this Ergotron LX Dual Side-by-Side arm for flat screen monitors.

Transform your workspace with the Ergotron LX Adjustable Desk Monitor Arm, designed to deliver ergonomic comfort and modern style. Supporting monitors up to 34", this sleek arm features smooth 13" lift adjustment and full motion flexibility with 360° rotation, swivel, and pan. Its polished aluminum construction ensures durability while enhancing your desk’s aesthetics. The arm folds neatly under shelves or cabinets, saving space when not in use. With Constant Force™ Technology, you can reposition your screen effortlessly to reduce strain and boost productivity. Ideal for dynamic work environments, this monitor arm is built to last and backed by a 10-year warranty..Mounts to desks for ergonomic monitor positioning and space-saving use..Supports one monitor up to 34" with a single-arm configuration..Adjusts vertically from approx. 5" to 20" for personalized screen height..Built from polished aluminum for durability and a sleek, modern look..Moves with 360° rotation, 75° tilt, 360° swivel, and 360° pivot flexibility..Designed without drawers, bays, or shelves for a clean workspace..Weighs 7.9 lbs. with base and hardware for stable desk mounting..Compatible with 75x75 mm and 100x100 mm VESA mounting patterns..Measures approx. 20.6"H x 10.6"W x 4"D when fully extended and folded..Certified Clean Air GOLD.Ergotron 10-year limited warranty.

Experience ergonomic excellence with the Ergotron LX Pro Adjustable Wall Monitor Arm. Designed for modern workspaces, this sleek black arm supports monitors up to 34" and 22 lbs., offering smooth lift, tilt, pan, and rotation with Constant Force™ technology. Its wall-mounted design frees up valuable desk space while keeping your screen within reach or stowed away just 4" from the wall. Built-in rotation stops protect surrounding surfaces, and the durable aluminum construction ensures long-lasting performance. Ideal for offices, healthcare environments, or compact setups, the LX Pro delivers style, flexibility, and comfort—backed by a 10-year warranty..Mounts directly to wall for space-saving monitor placement.Supports screens up to 34" for flexible viewing setups.Offers 13" lift for ergonomic height adjustment.Finished in black with durable aluminum construction.Enables 360° rotation, 85° tilt, and full swivel articulation.Stows monitor within 4" of wall to maximize space.Weighs 6.0 lbs. for lightweight yet sturdy installation.Compatible with VESA 100 x 100 mm and 75 x 75 mm standards.Measures approx. 17" H × 10" W × 4" D for compact use.Certified to ANSI/BIFMA and HCAI/OSHPD standards.Ergotron 10-year limited warranty.

Introducing the LX Pro—an evolution of the industry-leading LX design. LX Pro combines everything you love about the LX arm with modern enhancements that further streamline installation and maximize ergonomics. It's bound to become the preferred solution when upgrading a workstation. Experience the perfect blend of style and functionality. An added cover safely routes cords, reducing cable clutter for a sleek look while preventing snags when an arm’s in motion. Engage a built-in stop that limits the extension’s side-to-side motion to help prevent damage to adjacent walls or partitions. Modular construction makes it easy to adapt with accessory add-ons and conversion kits as technology shifts and requirements change. The LX line has been a trusted choice in ergonomic workspace solutions for over 20 years; recognized for its quality engineering, flexibility, and innovative Constant Force lift technology. The new LX Pro carries this legacy forward with a modern design, easier installation, and improved ergonomics. With added adaptability for a wide range of monitor setups, LX Pro continues Ergotron’s commitment to solutions that evolve with changing workplace needs..Premium Adjustable Monitor Arm – Single‑monitor articulating arm designed for ergonomic comfort and professional workstation setups..Supports Monitors Up to 34" – Ideal for widescreen and ultrawide displays in office, design, and home work environments..Smooth 13" Height Adjustment – Delivers precise vertical movement for sitting or standing desk configurations..Modern White Finish – Durable aluminum and high‑strength steel construction offers long‑lasting stability and a clean, contemporary look..Full Articulation – Provides 75° tilt, 360° rotation, 180° pan, and portrait‑to‑landscape pivot for ergonomic viewing flexibility..VESA Compatible – Supports 75 x 75 mm and 100 x 100 mm mounting patterns for wide display compatibility..Streamlined Cable Management – Built‑in cover routes cords neatly to reduce clutter and prevent snags during arm movement..Impact‑Prevention Rotation Stop – Optional stop helps limit side‑to‑side motion to avoid hitting walls or partitions..Modular & Upgrade‑Ready – Works with accessory add‑ons and conversion kits to evolve with changing workstation needs..Trusted LX Line Engineering – Built on 20+ years of reliable Ergotron design backed by innovative Constant Force technology..10‑Year Manufacturer’s Warranty – Long‑term coverage ensures durability and peace of mind.

Introducing the LX Pro—an evolution of the industry-leading LX design. LX Pro combines everything you love about the LX arm with modern enhancements that further streamline installation and maximize ergonomics. It's bound to become the preferred solution when upgrading a workstation. Experience the perfect blend of style and functionality. An added cover safely routes cords, reducing cable clutter for a sleek look while preventing snags when an arm’s in motion. Engage a built-in stop that limits the extension’s side-to-side motion to help prevent damage to adjacent walls or partitions. Modular construction makes it easy to adapt with accessory add-ons and conversion kits as technology shifts and requirements change. A tension-level indicator provides a visual reference when counterbalancing an arm with its device; when installing multiple arms, note the first arm’s setting for quicker adjustment. Built-in rotation-stop on the extension can be engaged to limit side-to-side motion to deter impacts with wall..Premium Adjustable Monitor Arm – Fully articulating single‑monitor arm designed for ergonomic comfort and professional workstation setups..Supports Large Displays – Holds monitors up to 34", ideal for widescreen and ultrawide productivity or design environments..Enhanced Height Adjustment – Provides approx. 13" of smooth vertical lift for customized sitting or standing desk positioning..Advanced Cable Management – Integrated cover routes cables safely to reduce clutter and prevent snags during arm movement..Improved Safety Controls – Built‑in rotation stop limits side‑to‑side extension to help prevent wall or partition impact..Highly Flexible Viewing – Offers 75° tilt, 360° rotation, 180° pan, and full pivot for landscape or portrait viewing..Durable Modern Construction – Made from aluminum and high‑strength steel with a dark gray finish for long‑lasting stability..VESA Compatible – Supports standard 75 x 75 mm and 100 x 100 mm mounting patterns for broad monitor compatibility..Modular & Upgrade‑Ready – Adaptable design works with add‑ons and conversion kits as technology and workspace needs change..Fast, Consistent Setup – Tension‑level indicator helps match adjustments across multiple arms for quicker, consistent installation..Long‑Term Reliability – Backed by a 10‑year manufacturer limited warranty for peace of mind.

This versatile arm can be used in a variety of applications: attach a smaller monitor for use within a sit-stand workstation or position a large display up to 25 lbs (11.3 kg) wherever you want it.The LX provides unparalleled range of motion, being able to accommodate a user’s sitting or standing posture. Features include 20 inches (51 cm) of vertical adjustment and 62 inches (157 cm) of side-to-side motion..LX sit-stand desk mount LCD arm offers comfortable typing position.Screen size: 42", Load capacity: 7 - 25 lbs..20" Height range enables users to move between sitting and standing positions during data entry.Polished aluminum construction for durability.Pan: 360 deg, Tilt: 75 deg.Lift: 20".VESA mounting standards: MIS-D, 75/100 (hole pattern: 100 x 100 mm & 75 x 75 mm), MIS-E (hole pattern: 200 x 100 mm), MIS-F.10000 cycle test applied to lift mechanism that ensures years of trouble-free height adjustment.Monitor is capable of tilting 70 deg up and 5 deg down.Locking connections between arm, extension and base provide added theft deterrence and reduce potential disconnections caused by jarring or impacts.Desk clamp attaches to edge up to 2.5" thick, grommet mount attaches through hole 0.5" to 2.5" wide and up to 2.5" thick.Cable management clips on the under side of the arm route and hide cords for user convenience.Attach keyboard arm at base of pole while leaving the arm's wall-mount base unused, to add an LX sit-stand keyboard arm.Extends LCD up to 33" and push your display out of the way when not in use.Contains LX sit-stand arm, extension, desk clamp base, grommet-mount base, 48 cm pole and VESA brackets.Comes with 10 years warranty.The Ergotron 45-360-026 is a versatile arm. Use it to mount a second monitor within a sit-stand workstation or mount a large monitor or TV where you want!

Enhance your workspace with the Ergotron LX Pro Adjustable Desk Monitor Arm, Tall Pole. Designed for professionals who demand flexibility and style, this dark grey arm supports monitors up to 34" and 22 lbs. With Constant Force™ technology, it delivers smooth, effortless adjustments—lift, tilt, pan, and rotate your screen to your ideal position. The tall pole design offers extended vertical range, while the sleek aluminum build and integrated cable management keep your desk organized and modern. Whether you're working, designing, or gaming, the LX Pro delivers ergonomic comfort and long-lasting performance—backed by a 10-year warranty..Built for single monitors with tall pole for extended vertical range.Supports screens up to 34" for versatile professional use.Offers 13" lift for ergonomic height adjustment.Finished in dark grey with durable aluminum construction.Enables 360° rotation, 85° tilt, and full swivel articulation.Keeps workspace tidy with integrated cable management.Weighs 11.3 lbs. for sturdy and stable installation.Compatible with VESA 100 x 100 mm and 75 x 75 mm standards.Measures approx. 20" H × 10" W × 5" D for compact use.Certified to ANSI/BIFMA standards for quality and safety.Ergotron 10-year limited warranty.