Half-Mask Respirators
34 resultsThis half facepiece reusable respirator offers reliable and convenient respiratory protection and is suitable for many situations, helping provide protection against particulates and a wide variety of gases and vapors according to NIOSH approvals..This series combines comfort and convenience.Comfortable soft, lightweight facepiece with easy-to-adjust head straps.NIOSH approved for negative pressure air purifying and supplied air dual airline applications.Can be disassembled, cleaned and reused.Replaceable cartridges and filters allow reuse of facepiece for cost savings
Safeguard yourself and employees from potential workplace hazards..Half mask respirator, medium.Silicone face piece conforms to facial features and doesn't harden with age.1 Each.Contoured sealing flange and cradle suspension system eliminates discomfort caused by facial nerves.Cradle suspension system allows the face piece to seal on the face without creating pressure points
Safeguard yourself and employees from potential workplace hazards..Particulate respirator.Size: Standard.Filter classification: N (non-oil particulates).Filter efficiency: 95.10 per box.Operation type: Facility safety, maintenance, repair and operations, overhaul.Mission type: Aircraft, ships, vehicles.Recommended for grinding, welding, torch cutting, brazing, soldering, metal pouring.Recommended industry: Automotive, construction, food and beverage manufacturing, manufacturing, metal production and fabrication, military maintenance, repair and operation (mro), mining, oil and gas, pharmaceutical, transportation.Suspension: Adjustable strap, respirator Cup.NIOSH approval TC-84A-0007, N95 approved.Adjustable nose clip reduces potential for eyewear fogging and helps ensure a better seal and fit.Fully adjustable headstraps help provide a secure fit.Flame resistant per ASTM D2859, buckle adjustable straps provide a comfortable, secure fit with a single tug.Compatible with a variety of protective eyewear and hearing protection.Strap attachment type: Adjustable buckle, faceseal/nosefoam: Faceseal.Cake-resistant filter media, all filter design provides economical protection, maintenance free, promotes easier communication.Weight: 0.1 lbs..Welding respirator.10/Box.3M Cool flow exhalation valve is a one-way valve offering easy exhalation for cool/dry comfort.Ideally suited for work settings that involve heat, humidity, or long periods of wear.Braided straps provide comfort and durability.Recommended for welding where ozone and nuisance level organic vapors may be present.Adjustable nose clip provides a custom fit, secure seal, reduces potential for eyewear fogging
MSA Safety AdvantageĀ® Medium half face piece air purifying respirator has single neck strap to offer stability and comfort for workers. Respirator features a softer face piece that is made from a clear blue formulation of thermoplastic rubber..Air purifying respirator, single neckstrap.Lighter and softer face piece is made from a clear blue formulation of thermoplastic rubber.1 Each.To give the workers more comfort and stability than ever.NIOSH approved.Safeguard yourself and employees from potential workplace hazards.
NIOSH approved against certain organic vapors and particulates. Use for a variety of applications including spray painting, pesticides, agriculture, construction and transportation..Certifications and standards: NIOSH approved for respiratory protection against certain organic vapors and particulates.Lightweight well-balanced design enhances comfort.Disposable model helps reduce maintenance issues for greater convenience.Multi-purpose respirator assembly works in a variety of workplace applications.Half facepiece design is ideal for intermittent use
These respirators help protect against certain airborne contaminants. Before use, the wearer must read and understand the User Instructions provided as a part of the product packaging. A written respiratory protection program must be implemented meeting all the requirements of OSHA 1910.134 including training, fit testing and medical evaluation. In Canada, CSA standards Z94.4 requirements must be met and/or requirements of the applicable jurisdiction, as appropriate. Misuse may result in sickness or d eath. For proper use, see packaging instructions, supervisor..Half Face piece respirator, small.Interchangeable filters enable wearer to match the filter with the application.1 Each.Material provides soft cushioning on face.These face pieces can be used with 2000, 5000, 6000 and 7000 Series cartridges/filters and adapters.Reusable respirator.7500 series.Facepiece type: Half facepiece reusable, operation type: Facility safety, maintenance, repair and operations, overhaul.Harness type: 4 point.Mission type: Aircraft, ships, vehicles.Recommended for assembly, cleaning, grinding, machine operations, painting, remediation, welding.Recommended industry: Automotive, construction, food and beverage manufacturing, metal production and fabrication, military maintenance, repair and operation (mro), mining, oil and gas, pharmaceutical, transportation.Connection type: Bayonet.Dual-mode head harness that adjusts easily so users can wear the respirator in either standard or drop-down mode.Safeguard yourself and employees from potential workplace hazards.
3M Occupational Health & Env Safety Half Medium Respirator - A 2 lb. reusable inhalator that keeps you protected from environmental hazards.Respirator/Mask Type: Half Facepiece Respirator.Size: M.Weight: 2 lbs..Filter Information: P100 Filter.Pack Size: Each.Half face piece respirator.1 Each.NIOSH approved for negative pressure air purifying and positive pressure dual airline applications.P100 filtration grade.Remarkably comfortable with soft, lightweight face piece and the easy-to-adjust head straps.Reusable. Just dispose of the cartridges/filters when used to capacity
Gray & Teal Rugged Comfort Quick Latch Size āSā Half Facepiece - Designed with 3M filters to protect against airborne contaminants.For use in transportation, construction, MRO, Food and Beverage and more..3M⢠Cool Flow⢠Valve.4 point Quick Latch.Gray/Teal.Size: Small.Weight: 0.37 lbs..Filter Information: Dirty Environments Against Airborne Contaminants when Used with Approved 3M Cartridges & Filters.Pack Size: Each
3M Occupational Health & Env Safety M Organic Vapor Acid Gas Respirator - Offers protection against organic vapors.Material: Thermoplastic Elastomers.Application/Usage: Commercial & Residential.Respirator/Mask Type: Half Mask Respirator.Recommended Use: Use Against a Variety of Gases & Vapors.Size: M.Method of Attachment: Permanently Attached Cartridges for Ease of Use & Little or no Maintenance.Filter Information: Provide Respiratory Protection from Certain Organic Vapors at Concentrations up to 10 Times the Permissible Exposure Limit.Pack Size: Each.Half face piece respirator.1 Each.Can be used with NIOSH P95 and P100 filters for oil and non-oil particle.Low profile design provides wider field of vision and greater comfort while wearing goggles/glasses.Resalable storage bag helps keep respirator clean between uses.Certifications and standards: NIOSH approved against certain organic vapours.Use in a variety of workplace applications, including petrochemical, chemical manufacturing
These respirators help protect against certain airborne contaminants. Before use, the wearer must read and understand the User Instructions provided as a part of the product packaging. A written respiratory protection program must be implemented meeting all the requirements of OSHA 1910.134 including training, fit testing and medical evaluation. In Canada, CSA standards Z94.4 requirements must be met and/or requirements of the applicable jurisdiction, as appropriate. Misuse may result in sickness or d eath. For proper use, see packaging instructions, supervisor..Size: Large.Suspension: 4 point bayonet adjustable strap.Material: Thermoplastic elastomer (TPE).Offers reliable, convenient respiratory protection when combined with 3M⢠particulate filters or cartridges (such as organic vapor/acid gas cartridges) or dual airline system.Comes with reclosable storage bag.For use with 3M⢠cartridges 6000 series; 3M⢠filters 2000, 2200, 7000 or 5000 series; or 3M⢠dual airline systems against a variety of gases, vapors and particulate hazards according to NIOSH approvals.Mission type: Aircraft, ships, vehicles.Operation type: Facility safety, maintenance, repair and operations and overhaul.Recommended application: Assembly and mechanical, chemical clean-up, chemical handling, chipping, chiseling, cleaning, furnace operations, grinding, laboratories, machining, masonry, painting, pouring/casting, sanding, sawing and welding.Recommended industry: Agriculture, automotive, chemicals, construction, general manufacturing, mining, oil and gas, pharmaceuticals, primary metals and transportation.Reusable respirator.Facepiece type: Half facepiece reusable, operation type: Facility safety, maintenance, repair and operations, overhaul.Harness type: 4 point.Recommended for assembly, cleaning, demolition, facility maintenance, grinding, machine operations, painting, sanding, welding.Recommended industry: Automotive, construction, food and beverage manufacturing, manufacturing, metal production and fabrication, military maintenance, repair and operation (mro), mining, oil and gas, pharmaceutical, transportation.Connection type: Bayonet.Weight: 1/4 lbs..Compatible and convenient respiratory protection.3M⢠Thermoplastic Elastomer (TPE) Large 4 Point Bayonet Adjustable Strap Reusable Respirator provides compatible and convenient protection.
Gray & Teal Rugged Comfort Quick Latch Size "M"? Half Facepiece - Designed with 3M filters to protect against airborne contaminants.Material: Silicon & Nylon.Type: Reusable Respirator.Application/Usage: Facility Maintenance, Grinding, Machine Operations, Sanding, Welding, Demolition, Assembly & Cleaning.Respirator/Mask Type: Half Facepiece Respirator.Size: M.Weight: 0.37 lbs..Filter Information: Dirty Environments Against Airborne Contaminants when Used with Approved 3M Cartridges & Filters.Pack Size: Each
3M Occupational Health & Env Safety L Organic Vapor Acid Gas Respirator - Offers protection against organic vapors.Half face piece respirator.Use for a variety of applications including spray painting, pesticides, agriculture, construction.Disposable mask.Low profile design provides wider field of vision and greater comfort while wearing goggles/glasses.Resealable storage bag helps keep respirator clean between uses.Certifications and standards: NIOSH approved against certain organic vapours and particulates
3m Occupational Health & Env Safety Light Blue Particulate Respirator - Features an adjustable noseclip and cushioning nose foam to provide a comfortable fit.Application/Usage: Agricultural Production, Aluminum Smelting, Brewing Operations, Dry Chemical Handling & Paper Processing.Respirator/Mask Type: Particulate Respirator.Size: Standard.Standards/Approvals: R95.Method of Attachment: Two-Strap Design with Dual Point Attachment Helps Provide a Secure Fit.Filter Information: Carbon Filter for Relief Against Nuisance Levels of Acid Gases.Features: Braided Comfort Strap & Stapled Headband.Particulate respirator.20/Box.Lightweight construction promotes greater worker comfort and contributes to increased wear time.All filter design provides economical protection, maintenance free, promotes easier communication.Braided straps provide comfort and durability.Adjustable nose clip provides a custom fit, secure seal, reduces potential for eyewear fogging.Collapse resistant shell, increased durability, reliable in most hot, and humid conditions
3M Occupational Health & Env Safety Half Large Respirator - A 2 lb. reusable inhalator that keeps you protected from environmental hazards.Respirator/Mask Type: Half Facepiece Respirator.Size: L.Weight: 2 lbs..Filter Information: P100 Filter.Pack Size: Each.Half face piece respirator.1 Each.Supplied as a complete assembly with reclosable storage bag.Remarkably comfortable with soft, lightweight face piece and the easy-to-adjust head straps.Reusable just dispose of the cartridges/filters when used to capacity
Safeguard yourself and employees from potential workplace hazards..Half Face piece respirator, large.Interchangeable filters enable wearer to match the filter with the application.1 Each.Material provides soft cushioning on face.These face pieces can be used with 2000, 5000, 6000 and 7000 Series cartridges/filters and adapters.This half facepiece reusable respirator 7500 Series uses advanced silicone material to help provide comfortable and durable respiratory protection.The 3M⢠Cool Flow⢠Valve helps make breathing easier and can reduces heat and moisture build-up for cool, dry comfort.Half facepiece ultimate reusable respirator.Advanced silicone material for increased comfort and durability.Dual-mode head harness for standard or drop-down mode.For use with 3M⢠Cartridges 6000 Series; 3M⢠Filters 2000, 2200, 7000 or 5000 Series; or 3M⢠Dual Airline Systems against a variety of gases, vapors and particulate hazards according to NIOSH approvals
Whether you're sanding drywall, wood or metal surfaces, reach for the 3M⢠Performance Respirator 8210Plus for Paint Prep. This N95 respirator features Advanced Electrostatic Media that enhances the capture of airborne particles while allowing you to breathe easy. It is designed with welded straps, soft nose foam for comfort, and an adjustable nose clip to help ensure a custom, secure seal. Projects start with safetyāso make sure to pick up the 3M⢠8210Plus Performance Respirator Paint Prep..NIOSH-APPROVED N95 for at least 95 percent filtration efficiency against certain non-oil-based particles and aerosols.ADVANCED FILTER MEDIA for easy breathing.Two-strap design with welded dual point attachment helps provide a secure seal ā straps made of Thermoplastic Elastomer.ADJUSTABLE NOSECLIP helps ensure a custom, secure seal.STRETCHABLE, BRAIDED HEADBANDS: With staple-free attachment for comfort.LIGHTWEIGHT DESIGN For comfort.CONVENIENT, DISPOSABLE DESIGN.COMPATIBLE WITH A VARIETY OF PROTECTIVE EYEWEAR AND HEARING PROTECTION.RECOMMENDED FOR use when sanding, sawing, grinding, lawn mowing, sweeping, drywall sanding, grinding, woodworking and working with fiberglass insulating particles.ALSO HELPS PROTECT AGAINST particles such as mold, granular pesticides, allergens and dust.Contains no components made from natural rubber latex.Certifications and standards: NIOSH
Gray & Teal Rugged Comfort Quick Latch Size "L"? Half Facepiece - Designed with 3M filters to protect against airborne contaminants.Material: Silicon & Nylon.Type: Reusable Respirator.Application/Usage: Facility Maintenance, Grinding, Machine Operations, Sanding, Welding, Demolition, Assembly & Cleaning.Respirator/Mask Type: Half Facepiece Respirator.Size: L.Weight: 0.37 lbs..Filter Information: Dirty Environments Against Airborne Contaminants when Used with Approved 3M Cartridges & Filters.Pack Size: Each
This economical disposable N95 particulate respirator is designed to help provide reliable worker respiratory protection against certain non-oil based particles..Lightweight, disposable particulate respirator is an economical choice for respiratory protection.Certifications and standards: NIOSH approved for at least 95 percent filtration efficiency against certain non-oil based particles.Adjustable noseclip helps provide a custom and secure seal.Two-strap design with four point staple attachment helps provide a secure seal.Compatible with a variety of protective eyewear and hearing protection
This classic disposable N95 particulate respirator is designed to help provide comfortable, reliable worker respiratory protection against certain non-oil based particles..Lightweight construction promotes greater worker acceptance and may help increase wear time.Certifications and standards: NIOSH approved for at least 95 percent filtration efficiency against certain non-oil based particles.Two-strap design with welded dual point attachment helps provide a secure seal.Advanced electrostatic media is designed for ease of breathing.Cushioning nose foam
Moldex Metric Inc. M Half Mask - Comes with two 7100 organic vapor cartridges..100% PVC-Free.NIOSH approved for organic vapors.Use with MoldexĀ® N95, R95 or P100 filters.Use with #8910 N95 particulate pre-filters and #7020 pre-filter retainers.Size Medium.Weight: 0.96 lbs..Filter Information: Two 8910 N95 Particulate Pre-Filters & Two 7020 Pre-Filter Retainers.Pack Size: Each
Moldex Metric Inc. 7000 Respirator, M - Comes with an adjustable head cradle to provide a custom fit..100% PVC-Free, reusable.Sleek design for modern, high-tech look and increased worker acceptance.Light weight design plus extra-wide sealing area provides all-day comfort.Low profile, compact design fits well under welding helmets and with safety glasses.Mask drops down for convenient storage around the neck or locks down for custom fit.Adjustable head cradle and curved neck buckles.Wide field of vision
This disposable N95 particulate respirator features the proprietary 3M Cool Flow Valve and helps provide comfortable, reliable worker respiratory protection. It is ideally suited for hot/dusty work settings that require long periods of wear..3M Cool Flow Exhalation Valve helps reduce heat build-up inside the respirator.Certifications and standards: NIOSH approved for at least 95 percent filtration efficiency against certain non-oil based particles.M-Noseclip adjusts easily for fewer pressure points and greater comfort..Braided headbands two-strap design with dual point attachment helps provide a secure seal.Spacious and durable.Designed to increase comfort and wearability.Advanced Electret Media is designed for ease of breathing
Stay protected with the Moldex N95 Particulate Respirator featuring a convenient HandyStrap that lets the mask hang around your neck when not in use. Its durable Dura-Mesh shell resists collapsing in heat and humidity, ensuring reliable performance in tough conditions. Box includes 15 medium/large masks. Feature a 100% PVC-free construction..100% PVC-Free.HandyStrap with buckle, allows mask to hang down around the user's neck when not in use.Soft foam nose cushion for added comfort and no pressure points.Dura-Mesh shell resists collapsing in heat and humidity.Softspun lining for increased comfort and durability.Size: Medium/Large.Weight: 1 lbs..Standards/Approvals: NIOSH.Filter Information: N95.Pack Size: 15/Box
3m Occupational Health & Env Safety Gray Particulate Respirator - Features an adjustable noseclip and cushioning nose foam to provide a comfortable fit.Application/Usage: Agricultural Production, Aluminum Smelting, Brewing Operations, Dry Chemical Handling & Paper Processing.Respirator/Mask Type: Particulate Respirator.Size: Standard.Standards/Approvals: R95.Method of Attachment: Two-Strap Design with Dual Point Attachment Helps Provide a Secure Fit.Filter Information: Carbon Filter for Relief Against Nuisance Levels of Acid Gases.Features: Braided Comfort Strap & Stapled Headband
Safeguard yourself and employees from potential workplace hazards..Particulate respirator without valve.Dura-mesh shell resists collapsing in heat and humidity.20 per box.Molded nose bridge seals easily without a metal noseband.Soft foam nose cushion for added comfort.NIOSH approved.2200 series.Size: Medium/large.Filter classification: N (non-oil particulates).Filter efficiency: 95.9 1/2"(H) x 5 1/5"(W) x 5 1/5"(L).Recommended for hot, humid and dusty environments such as welding, soldering and brazing, grinding, sanding, sweeping, bagging, stone quarrying, metal machining, cement, underground mining, polishing, buffing, lime, poultry and textiles.Suspension: 2-strap.Meets heat and flame resistance in accordance with ANSI/ISEA 110-2003 section 7.11.1
Safeguard yourself and employees from potential workplace hazards..Particulate respirator.Size: Standard.Filter classification: P (oil proof).Filter efficiency: 95.10 per box.Facepiece type: Half facepiece.Mission type: Aircraft, ships, vehicles.Recommended for cleaning, grinding, welding.Recommended industry: Automotive, construction, food and beverage manufacturing, manufacturing, metal production and fabrication, military maintenance, repair and operation (mro), mining, oil and gas, pharmaceutical, transportation.Suspension: Fixed strap, respirator Cup.NIOSH approval TC-84A-1166, P95 approved.Braided two-strap design with dual point attachment helps provide a secure fit.Adjustable nose clip provides a custom fit, secure seal, reduces potential for eyewear fogging.Lightweight construction promotes greater worker comfort and contributes to increased wear time.Compatible with a variety of protective eyewear and hearing protection.Strap attachment type: Stapled, faceseal/nosefoam: Soft material.Cool flow exhalation valve is a one-way valve offering easy exhalation for cool/dry comfort.Weight: 0.1 lbs..10/Box.3M Cool flow exhalation valve is a one-way valve offering easy exhalation for cool/dry comfort.M-nose clip adjusts easily for custom fit and secure seal with fewer pressure points and reduced potential for eyewear fogging.Braided straps provide comfort and durability
The GlobeāÆ7765B is a 4āply adult KN95 respirator in sleek black, engineered for a close, comfortable fit and efficient protection. It offers ~98% particle filtration, conforms snugly to the face, and is individually wrapped to ensure hygiene. Compliant with Health Canada, CDC, and GBāÆ2626ā2006 standards, it contains no graphene and is suitable for combating COVID-19, dust, and workplace aerosols..High filtration efficiency (~98%) via 4ālayer structure including nonāwoven and meltāblown fabrics.Ergonomic fit & comfort thanks to rounded shape, flexible nose piece, and ear loops that offer ample breathing space.Certified & safe: Approved by Health Canada (MDEL #13940), CDC-recognized, meets GBāÆ2626ā2006 standards, and individually sealed for cleanliness
Premium, 4-ply, medical-grade, NIOSH-approved N95 respirator mask filters airborne particles. Flat-fold style with adjustable nose and chin wire for a secure seal and comfortable fit..Meets NIOSH and CDC guidelines for TB exposure, N95 approved.Positive Facial Lock and malleable nosepiece allow a custom fit for any face, so one size mask fits all.Micro filter medium protects against micron-size particles.Double band holds mask firmly in place for maximum protection.All respirators must be selected, fitted and maintained in accordance with OSHA and other applicable regulations.35 face masks per box
The GlobeāÆ7765W KN95 is a form-fitting, 4āply adult-size respirator designed for superior protection and comfort. It delivers a tight seal and 98% filtration efficiency to guard against airborne particles, including COVIDā19, dust, and workplace aerosols. Licensed by Health Canada (MDEL #13940), compliant with GBāÆ2626ā2006 standards, and free of graphene, it meets rigorous safety requirements..High filtration efficiency (98%) and 4ālayer construction (nonāwoven + meltāblown) for effective protection against fine particles.Comfortable, snug fit achieved with a flexible rounded shape, secure nose piece, and ear loopsāalso individually wrapped for hygiene.Certified and safe: Medical device licensed by Health Canada (MDEL #13940), CDC recognized, compliant with GBāÆ2626ā2006, and contains no graphene
The GlobeāÆ7765B is a 4āply adult KN95 respirator in sleek black, engineered for a close, comfortable fit and efficient protection. It offers ~98% particle filtration, conforms snugly to the face, and is individually wrapped to ensure hygiene. Compliant with Health Canada, CDC, and GBāÆ2626ā2006 standards, it contains no graphene and is suitable for combating COVID-19, dust, and workplace aerosols..High filtration efficiency (~98%) via 4ālayer structure including nonāwoven and meltāblown fabrics.Ergonomic fit & comfort thanks to rounded shape, flexible nose piece, and ear loops that offer ample breathing space.Certified & safe: Approved by Health Canada (MDEL #13940), CDC-recognized, meets GBāÆ2626ā2006 standards, and individually sealed for cleanliness
The GlobeāÆ7765W KN95 is a form-fitting, 4āply adult-size respirator designed for superior protection and comfort. It delivers a tight seal and 98% filtration efficiency to guard against airborne particles, including COVIDā19, dust, and workplace aerosols. Licensed by Health Canada (MDEL #13940), compliant with GBāÆ2626ā2006 standards, and free of graphene, it meets rigorous safety requirements..High filtration efficiency (98%) and 4ālayer construction (nonāwoven + meltāblown) for effective protection against fine particles.Comfortable, snug fit achieved with a flexible rounded shape, secure nose piece, and ear loopsāalso individually wrapped for hygiene.Certified and safe: Medical device licensed by Health Canada (MDEL #13940), CDC recognized, compliant with GBāÆ2626ā2006, and contains no graphene
Protect against airborne particles in warehouses, construction sites and other industrial zones with this 5-pack of Body Gear dust masks..Dust mask in one size that fits most.Offers protection against certain particles and helps protect against certain airborne contaminants.Helps to filter non-toxic particulates including dusts, pollens, and grass clippings.Pack contains five masks.Mask dimensions are 2.25"H x 6"W x 9"D.Adjustable metal nose clip.Protect against airborne particles in warehouses, construction sites and other industrial zones with this 5-pack of Body Gear dust masks.
These protective disposable face masks by WeCare are comfortable, breathable, and foldable. The cone-shaped masks offer five-ply protection. The elastic fabric completely fits the face. Inner layer with soft materials contacts your face for comfortable user experience. Suitable for different face shapes. Each mask is individually packaged from the manufacturer for added protection and sanitary use..Everyday face mask is perfect for travel, flights, grocery stores, the office, or anywhere.This particular respirator mask offers five layers of protection and high filtration with breathable fabric and materials.Filter is designed to prevent fogging up, and the metal nose clip lets you adjust the mask to keep particles in or out and prevent your glasses from getting fogged up.Foldable design is perfect for storing in your pocket.Pack of 50 boxes; each box contains 20 masks.Inner skin layer is ultra-soft and smooth for increased comfort even for extended periods.Adjustable ear loops are designed for your ear comfort as well.Cone shape keeps the mask off your face and increases comfort and breathability.Each mask in the box is individually packaged.Disposable - single use only.Not for medical use
Protect against airborne particles in warehouses, construction sites and other industrial zones with this 5-pack of Body Gear dust masks..Dust mask in one size that fits most.Offers protection against certain particles and helps protect against certain airborne contaminants.Helps to filter non-toxic particulates including dusts, pollens, and grass clippings.Pack contains five masks.Mask dimensions are 2.25"H x 6"W x 9"D.Adjustable metal nose clip.Protect against airborne particles in warehouses, construction sites and other industrial zones with this 5-pack of Body Gear dust masks.