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Corrugated Mailers

Protect your packages from the rigors of shipping by sending them in corrugated mailers. These mailers are boxes and large envelopes made of thick fiberboards. The walls of a corrugated mailer have a fluted inner board covered by one or two flat linerboards. Flutes are S-shaped arches that give a corrugated box its impressive structural strength. Staples® offers a wide selection of these sturdy, protective shipping boxes and envelopes.

Choosing the Right Corrugated Mailer for Your Package
The size of the item you wish to send will determine the type of corrugated mailer you need. You can send slim and small books as well as magazines, photos, and letters in corrugated envelopes. These corrugated document mailers ship flat and are stiff enough to get printed pages to their destinations without creases and are a strong alternative to plain window envelopes. For bigger items, you need larger mailers like corrugated boxes. These are ideal for shipping fragile items and bulky goods. They come in different sizes and styles. Their fluted walls provide ample stacking strength while insulating their contents from moisture, extreme temperatures, and physical damage.

Consider Board Strength When Comparing Corrugated Mailers
Manufacturers use different tests to determine the strengths of corrugated boxes. The most popular are the burst test and ECT or edge crust test. The wall thickness of a box determines its ECT score and burst strength. These then determine the maximum load capacity of the box. A single-walled corrugated mailer has a fluted layer between two linerboards. Boxes with burst strength ratings between 200 and 275 and ECT values between 23 and 55 pounds per square inch fall in this category. Double-walled mailers have two corrugated layers. They are stronger and offer better crush resistance. They can ship heavier items and come in strengths ranging from 200 to 600 pounds while scoring 42 to 82 on edge crush tests. Triple-walled boxes have three layers and can handle significantly higher weights. They are usually large containers for shipping heavy loads stacked on pallets.

What Is the Difference Between Corrugated and Cardboard Boxes?
While corrugated mailers feature fiberboard construction, cardboard boxes are made of paperboard. Regardless of its thickness, cardboard is a paper product while manufacturers use wood chips and shavings for corrugated boxes. A cardboard box also does not have an intermediate layer or fluted core.

What Are the Different Types of Corrugated Box Fluting?
There are five common types of corrugated box fluting designated by the letters: A, B, C, E, and F. An A-flute box has 30 to 36 flutes per linear foot with each one measuring 0.188 inches. B-flute boxes have 44 to 50 flutes that are 0.125 inches thick. Boxes with C flutes are the most common. Their flutes are intermediate in density and thickness between A and B flutes. E and F-flute boxes have more flutes but in much smaller sizes. Pizza boxes, sandwich packaging, and corrugated document mailers fall into these categories.

Are Linerboards Made of Chipboard?
No. Linerboards are usually made of recycled paper and kraft paperboard. Those made of kraft paper often appear brown. They can also come in white if made of bleached kraft paper. Linerboards do come in other colors besides white and brown.
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06"x4"x2" Partners Brand Corrugated Mailers, 50/Bundle (M642K)
Item : 1004941
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  • Corrugated Mailers are perfect for shipping small, light-weight fragile items.
  • Usable Inside Dimensions: 06"x4"
  • These one piece mailers fold together in seconds, no tape, glue or staples needed.
$19.79
50/Bundle
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Quality Park Die-Cut Fiberboard Ring Binder Mailer, White, 12 1/4"W x 12"L x 3 7/8"D
Item : 438294
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  • Each mailer measures 12 1/4"W x 12"L x 3 7/8"D
  • Protects ring binders, catalogs and business forms
  • Made of corrugated fiberboard
$4.29
Each
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12 1/8"x9 1/4"x6" Deluxe Literature Mailers, 50/Bundle (MFL1296)
Item : SS1007302
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  • Maximum protection for your most important documents
  • Manufactured from strong 200#/ECT32-B oyster white corrugated
  • Assembles in seconds
As low as $8.69
Multiple options available
White Corrugated Document Mailers, 11-3/4" x 10-3/4" x 2-1/4" (14886)
Item : SS940712
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  • Please select item from drop down menu on the right to view product details
  • Scored boxes with flaps that lock into place quickly and easily
  • Strong 200# test corrugated cardboard
As low as $11.99
Multiple options available
17.25"x11 1/4"x2" Partners Brand Easy-Fold Mailers, 50/Bundle (M17112BFK)
Item : SS1084529
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  • One-piece mailers have scores at multiple depths to ensure the proper fit for your products
  • Simply place product in the center, fold in the sides at your desired depth and seal with tape
  • Economical 200#/ECT-32-B Kraft corrugated construction, shipped flat and sold in bundle quantities
As low as $31.49
Multiple options available
Partners Brand Literature Mailer, Kraft, 7-1/2" x 7" x 3-1/4", 50/Bundle
Item : 256460
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  • Kraft
  • Type: Mailer
  • Dimensions: 7 1/2"(L) x 7"(W) x 3 1/4"(H)
$31.89
50/Bundle
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06 3/16"x5 3/8"x2 1/2" Partners Brand Corrugated Mailers, 50/Bundle (MRX6XL)
Item : SS988278
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  • All sizes are inside dimensions L x W x D(H).
  • Front locking tabs won't interfere with contents and provide a secure closure
  • Folds together in seconds, no tape needed
As low as $11.49
Multiple options available
Self-Seal Flat Mailers, White, 7" x 9", 100/Case
Item : SS992808
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  • QuickStrip closure is quick and easy to use - simply remove strip and press to close
  • Rigid chipboard construction protects contents from bending and crushing
  • Attractive white mailers provide a clean and professional appearance
As low as $17.49
Multiple options available
Staples® White Crush-Proof Corrugated Mailers - 10" Length
Item : SS988273
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  • All sizes are inside dimensions L x W x D(H)
  • Front locking tabs won't interfere with contents and provide a secure closure
  • Folds together in seconds, no tape needed
As low as $27.99
Multiple options available
Staples® Utility Flat Mailer, Kraft, 7-1/4" x 11", 250/Case
Item : SS1084534
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  • Environmentally-friendly mailers are made from 100% recycled paperboard and are 100% recyclable
  • Features convenient side-loading design, pressure sensitive closure and tear strip for easy opening
  • Ideal for mailing soft goods, photographs, documents and promotional items
As low as $100.99
Multiple options available
12"x6"x4" Partners Brand Corrugated Mailers, 50/Bundle (M1264K)
Item : 1499834
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  • Color: Kraft
  • Type: Corrugated Mailer
  • Size: 12" x 6"
$48.49
50/Bundle
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36"x24"x6" Partners Brand Jumbo Mailers, 20/Bundle (M36246)
Item : 831829
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  • Jumbo Mailers are great for shipping framed posters or artwork.
  • Economical 200#/ECT-32-C kraft corrugated construction.
  • Simply place product in the center, fold in the sides at your desired depth and seal with tape.
$111.19
20/Bundle
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Partners Brand Corrugated Mailers, 18" x 12" x 4" White, 50/Bundle (M18124)
Item : 2301191
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  • Use these corrugated mailers to ship merchandise safely.
  • Corrugated Mailers are manufactured from 200#/ECT32-B oyster white corrugated.
  • 18" x 12" x 4"
$146.99
50/Bundle
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2 (L) x 4 (W) x 8 (H)" Crushproof Mailers, White, 100/Bundle (62-080402)
Item : 695618
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  • Color: White
  • Weight Capacity: 200 lbs.
  • Crush-Proof Mailing Boxes
$48.89
100/Bundle
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10"x10"x2" Partners Brand Literature Mailers, 50/Bundle (M10102K)
Item : SS4054327
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  • Product Type: Literature Mailers
  • Brown colored kraft corrugated construction
  • Available in different sizes
As low as $45.19
Multiple options available
24"x14"x4" Partners Brand Corrugated Carrying Cases, 10/Bundle (MCC6)
Item : SS1084354
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  • Great for transporting products, promotional materials, samples or literature
  • One-piece die cut design folds together in seconds without tape or glue
  • Manufactured from strong 200#/ECT-32-B oyster white corrugated
As low as $19.19
Multiple options available
11 1/8"x8 3/4"x3" Partners Brand Literature Mailers, 50/Bundle (M1183)
Item : SS990407
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  • Folds together in seconds, no tape needed
  • Strong 200#/ECT-32B white corrugated construction
  • Shipped flat for easy storage
As low as $33.19
Multiple options available
05"x4"x2" Partners Brand Corrugated Mailers, 50/Bundle (M542)
Item : SS988277
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  • All sizes are inside dimensions L x W x D(H)
  • Front locking tabs won't interfere with contents and provide a secure closure
  • Folds together in seconds, no tape needed
As low as $16.99
Multiple options available
06"x4"x3" Partners Brand Corrugated Mailers, 50/Bundle (M643K)
Item : 1004940
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  • Corrugated Mailers are perfect for shipping small, light-weight fragile items.
  • These one piece mailers fold together in seconds, no tape, glue or staples needed.
  • 50/Bundle
$36.49
50/Bundle
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Partners Brand Literature Mailer, Kraft, 12" x 12" x 4", 50/Bundle
Item : 256462
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  • The perfect size to ship and store documents.
  • Manufactured from strong 200#/ECT-32-B kraft corrugated.
  • Assembles in seconds without tape, glue or staples.
$87.99
50/Bundle
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JAM Paper® Bubble Mailers with Peel and Seal Closure, 6 3/8 x 9 1/2, Silver Metallic, 12/pack (2744434)
Item : 261851
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  • Size: 6.38" x 9.5"
  • Material: Plastic
  • Closure: Peel and seal closure
$27.00
12/Pack
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22 x 18 x 2 3/4" Front Lock Deluxe Literature Mailer
Item : 2647545
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  • Featuring inside side flaps and front outside tuck closure
  • Maximum protection for your most important documents
  • Manufactured from strong 32 ECT-B oyster white corrugated
$257.99
50/Bundle
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Self-Seal Flat Mailers, Kraft, 20" x 27", 50/Case
Item : SS992809
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  • QuickStrip closure is quick and easy to use - simply remove strip and press to close
  • Rigid chipboard construction protects contents from bending and crushing
  • Convenient tear-tab opens easily without harming contents
As low as $35.99
Multiple options available
Staples® #4 Rigid Mailer, 9-1/2"x14-1/2", 200/Pack (27186)
Item : 909747
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  • Brown recycled mailer is ideal for a variety of shipping needs
  • Usable inside dimensions: 9-1/2" X 14-1/2"
  • Peel-and-seal strip is quick and easy to use. Remove strip and close.
$84.49
200/Pack
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