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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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Partners Brand Jumbo Easy-Fold Mailers, 36" x 30" x 6", Kraft, 20/Bundle (M36306)
Item : 2301496 / Model : M36306
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  • These one-piece mailers have scores at multiple depths to ensure the proper fit for your products with 1-6" depths.
  • Strong 200#/ECT-32-C kraft corrugated construction.
  • 36" x 30" x 6"
$184.39
20/Bundle
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Special Buy
$184.39*
20/Bundle

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only

Staples Kraft Utility Flat Mailers
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
Partners Brand Oyster White Deluxe Literature Mailers, 50/Bundle
Item : SS4054321
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  • Product Type: Literature Mailers
  • Oyster white colored corrugated construction
  • Available in different sizes
As low as $54.69
Multiple options available
Partners Brand Literature Mailers, 8" x 8" x 2", White, 50/Bundle (ML882)
Item : 2301076 / Model : ML882
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  • Literature mailers useful for shipping documents and books of many sizes
  • Strong 200#/ECT-32-B oyster white corrugated construction.
  • 8" x 8" x 2"
$51.99
50/Bundle
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Special Buy
$51.99*
50/Bundle

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only

11 1/8 x 8 5/8 x 2" Self-Seal Corrugated Bookfold
Item : 2647406 / Model : BSM1BKSS
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  • Peal off paper and press for a secure seal!.
  • Convenient tear strip makes carton easy to open.
  • Sturdy cartons help to prevent product damage.
$181.99
50/Bundle
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Partners Brand Literature Mailers, 30" x 24" x 4", White, 25/Bundle (ML30244)
Item : 2301337 / Model : ML30244
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  • Literature mailers useful for shipping documents and books of many sizes
  • Strong 200#/ECT-32-B oyster white corrugated construction.
  • 30" x 24" x 4"
$177.69
25/Bundle
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Special Buy
$177.69*
25/Bundle

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only

Staples® QuickStrip™ Side-Opening StayFlat® White Mailers
Item : SS1035124
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  • Side-open mailers allow for easier insertion and retrieval of contents
  • QuickStrip closure is quick and easy to use - simply remove strip and press to close
  • Rigid chipboard construction protects contents from bending and crushing
As low as $143.99
Multiple options available
Partners Brand Literature Mailers, 16" x 8" x 3", White, 50/Bundle (ML1683)
Item : 2301083 / Model : ML1683
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  • Literature mailers useful for shipping documents and books of many sizes
  • Strong 200#/ECT-32-B oyster white corrugated construction.
  • 16" x 8" x 3"
$98.99
50/Bundle
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Special Buy
$98.99*
50/Bundle

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only

9 1/2 x 8 x 8" Outside Tuck Corrugated Mailer
Item : 2647412 / Model : BSMEZ988
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  • Outside tuck won’t interfere with contents.
  • Front lock tabs provide secure closure.
  • When assembled, mailer provides doublewall protECTion on 3 sides.
$174.99
50/Bundle
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Partners Brand Kraft Deluxe Literature Mailers
Item : SS3784820
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  • Dimension: 12"H x 12"W x 2"D - 12"H x 12"W x 4"D
  • Type: Literature Mailer
  • Features: Maximum Protection for Your Most Important Documents, Assembles in Seconds Without Tape, Glue or Staples
As low as $112.49
Multiple options available
Partners Brand Brown Kraft Deluxe Literature Mailers, 25/Bundle
Item : SS4054319
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  • Product Type: Literature Mailers
  • Brown colored kraft corrugated construction
  • Available in different sizes
As low as $57.29
Multiple options available
Partners Brand Literature Mailers, 13" x 10" x 1 1/4", White, 50/Bundle (ML13101)
Item : 2301148 / Model : ML13101
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  • Literature mailers useful for shipping documents and books of many sizes
  • Strong 200#/ECT-32-B oyster white corrugated construction.
  • 13" x 10" x 1 1/4"
$61.99
50/Bundle
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Special Buy
$61.99*
50/Bundle

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only

Staples 05" x 10" x 12" Korrvu Standard Boxes (188121005)
Item : 700176 / Model : 188-121005
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  • Type: Standard Boxes
  • Size: 12" x 10"
  • Height: 5''
$35.35
5/bundle
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Special Buy
$35.35*
5/bundle
Buy More, Save More
1 @$35.35
2 @$34.15
3+ @$33.45

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only

Partners Brand Corrugated Mailers, 12" x 9" x 3", White, 50/Bundle (MLR1293)
Item : 2301168 / Model : MLR1293
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  • Use these corrugated mailers to ship merchandise safely.
  • Corrugated Mailers are manufactured from 200#/ECT32-B oyster white corrugated.
  • 12" x 9" x 3"
$82.99
50/Bundle
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Special Buy
$82.99*
50/Bundle

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only

Partners Brand Brown Kraft Deluxe Literature Mailers, 50/Bundle
Item : SS4054318
Add to Favorites
  • Product Type: Literature Mailers
  • Brown colored kraft corrugated construction
  • Available in different sizes
As low as $47.69
Multiple options available
Partners Brand Oyster White Deluxe Literature Mailers, 25/Bundle
Item : SS4054317
Add to Favorites
  • Product Type: Literature Mailers
  • Oyster white colored corrugated construction
  • Available in different sizes
As low as $118.59
Multiple options available
Partners Brand Deluxe Literature Mailers, 30" x 17" x 8", White, 25/Bundle (MFL30178)
Item : 2301341 / Model : MFL30178
Add to Favorites
  • Deluxe literature mailers useful for shipping documents and books of many sizes
  • Strong 200#/ECT-32-B oyster white corrugated construction.
  • 30" x 17" x 8"
$224.39
25/Bundle
1
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Special Buy
$224.39*
25/Bundle

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only

Staples Stayflats® Mailers, 13"H x 18"W
Item : 691632 / Model : 6SFW
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  • Type: Mailer
  • Color: White
  • Length: 18''
$66.99
100/Case
1
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Special Buy
$66.99*
100/Case

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only

Staples Kraft Stayflats® Mailers, 12.75" x 15", 100/Case (4SFK)
Item : 700103 / Model : 4SFK
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  • Type: Mailer
  • Color: Kraft
  • Size: 15'' x 12.75"
$57.59
100/Case
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Special Buy
$57.59*
100/Case

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only

Partners Brand Kraft Mailers
Item : SS3784834
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  • Dimension: 6"H x 6"W x 2"D - 6"H x 6"W x 4"D
  • Type: Corrugated Mailer
  • Features: Perfect for Shipping Small & Fragile Items
As low as $39.19
Multiple options available
Partners Brand Literature Mailers, 8" x 7" x 2", White, 50/Bundle (ML872)
Item : 2301142 / Model : ML872
Add to Favorites
  • Literature mailers useful for shipping documents and books of many sizes
  • Strong 200#/ECT-32-B oyster white corrugated construction.
  • 8" x 7" x 2"
$56.99
50/Bundle
1
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Special Buy
$56.99*
50/Bundle

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only

Partners Brand Literature Mailers, 12 1/2" x 5" x 3", White, 50/Bundle (ML1253)
Item : 2301152 / Model : ML1253
Add to Favorites
  • Literature mailers useful for shipping documents and books of many sizes
  • Strong 200#/ECT-32-B oyster white corrugated construction.
  • 12 1/2" x 5" x 3"
$66.99
50/Bundle
1
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Special Buy
$66.99*
50/Bundle

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only

Partners Brand Corrugated Mailers, 14" x 6" x 4", White, 50/Bundle (M1464)
Item : 2301194 / Model : M1464
Add to Favorites
  • Use these corrugated mailers to ship merchandise safely.
  • Corrugated Mailers are manufactured from 200#/ECT32-B oyster white corrugated.
  • 14" x 6" x 4"
$66.19
50/Bundle
1
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Special Buy
$66.19*
50/Bundle

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only

Partners Brand Literature Mailers, 16" x 8" x 4", White, 50/Bundle (ML1684)
Item : 2301143 / Model : ML1684
Add to Favorites
  • Literature mailers useful for shipping documents and books of many sizes
  • Strong 200#/ECT-32-B oyster white corrugated construction.
  • 16" x 8" x 4"
$125.99
50/Bundle
1
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Special Buy
$125.99*
50/Bundle

$5 off when you spend $30 or more on packing supplies with code 48437 Select SKUs only