Boxes & Mailers

SELECTION EXPERT ADVICE

Wall Strength & Load Capacity
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Match single-, double-, or triple-wall corrugated construction to your product weight to prevent in-transit damage and minimize costly returns.
Dimensional Weight Cost Control
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Right-sized boxes cut carrier DIM weight charges, selecting the optimal LxWxH for each SKU directly lowers your per-shipment freight cost.
Mailer Box vs. RSC: Choose Correctly
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Self-locking mailer boxes suit branded DTC shipments; traditional RSC corrugated boxes are ideal for palletized B2B and high-volume fulfillment.

Need help choosing boxes?

Pick the right corrugated box without overpaying for size or strength

Use these buying guides to size your box, compare board strength, and avoid dimensional weight surcharges.

Corrugated Boxes Guide → How to choose size, strength, and wall type Box Size Calculator → Find the smallest safe box for your product 32 ECT vs 200 lb Test → Which board strength rating fits your shipment
Overview

3,094 corrugated boxes, literature mailers and mailing tubes from 2 to 36 inches, mostly ECT-32 kraft and white, sold in bundles of 10 to 50. Each listing shows inside dimensions, board grade and bundle count so you can match a carton to the part you ship. Orders ship from five US regional warehouses; for mixed or recurring orders use the bulk quote path with SKU, quantity and destination ZIP.

Related collections

IN STOCK Professional white corrugated literature mailers (12 1/8" x 9 1/4" x 4") with self-sealing tabs and ECT-32-B crush-resistant construction. No assembly supplies needed–fold, tuck, and ship. Bundle of 50 per carton.
Boxes - Mailers

12 1/8 x 9 1/4 x 4 in White Corrugated Literature Mailers Self-Seal 50/Bundle

PN: M1294

12 1/8 x 9 1/4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$87.62 / BUNDLE
IN STOCK Professional-grade white corrugated literature mailers sized 12 1/8 x 9 1/4 x 3 with self-sealing tabs for secure, professional presentation. ECT-32-B construction delivers crush-resistant protection–no additional supplies needed. 50-box bundle ready to ship.
Boxes - Mailers

12 1/8 x 9 1/4 x 3 in White Corrugated Literature Mailers 50/Bundle

PN: M1293

12 1/8 x 9 1/4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$69.77 / BUNDLE
IN STOCK Professional-grade white corrugated literature mailers sized 12 1/8 x 9 1/4 x 2" with snug-fitting tabs and ECT-32-B crush-resistant construction. Quick fold-and-tuck assembly requires zero additional supplies. Bundle of 50 boxes for cost-effective shipping.
Boxes - Mailers

12 1/8 x 9 1/4 x 2 in White Corrugated Literature Mailers 50-Pack

PN: M1292

12 1/8 x 9 1/4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$54.21 / BUNDLE
IN STOCK Economical white corrugated literature mailers with self-sealing tabs for professional presentation without custom carton costs. ECT-32-B construction resists crushing and punctures. Fast assembly–no additional supplies needed. Bulk 50-pack.
Boxes - Mailers

12 1/8 x 9 1/4 x 1 1/4 in White Corrugated Literature Mailers 50-Pack

PN: ML1291R

12 1/8 x 9 1/4 x 1 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$80.51 / BUNDLE
IN STOCK Protect and present your marketing materials with professional white literature mailers designed for e-commerce brands. These 12 1/8 x 9 1/4 x 1 corrugated mailers feature crush-resistant ECT-32-B construction and secure fold-and-tuck tabs–no additional supplies required. Bundle of 50 delivers the perfect fit without custom carton costs.
Boxes - Mailers

12 1/8 x 9 1/4 x 1 in ECT-32-B White Corrugated Literature Mailers 50-Pack

PN: ML1291

12 1/8 x 9 1/4 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$56.63 / BUNDLE
IN STOCK Ship catalogs, brochures, and marketing materials with confidence. These 12x12x6 white corrugated mailers feature self-sealing tabs for secure closure and crush-resistant ECT-32-B construction. Bundle of 50 requires zero additional supplies–fold, fill, seal, ship.
Boxes - Mailers

12x12x6 White Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML12126

12 x 12 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$186.85 / BUNDLE
IN STOCK Professional-grade 12x12x4 white corrugated mailers designed for e-commerce brands shipping catalogs, brochures, and promotional materials. Features self-sealing tabs for secure closure and ECT-32-B crush-resistant construction that protects contents in transit. Bundle of 50 ready to assemble–no additional supplies required.
Boxes - Mailers

12x12x4 White Corrugated Literature Mailers 50-Pack M12124

PN: M12124

12 x 12 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$119.25 / BUNDLE
IN STOCK Professional-grade 12x12x3 white corrugated mailers designed for e-commerce brands shipping marketing materials, catalogs, and promotional items. Strong ECT-32-B construction with secure tuck-and-fold tabs ensures damage-free delivery. Bundle of 50 boxes ready to assemble–no additional supplies required.
Boxes - Mailers

12x12x3 White Corrugated Literature Mailers 50/Bundle ML12123

PN: ML12123

12 x 12 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$107.86 / BUNDLE
IN STOCK Ship your marketing materials in style with these 12x12x2 white corrugated literature mailers. Built from durable ECT-32-B material, they feature secure fold-and-tuck tabs and require zero additional supplies for assembly. Perfect for e-commerce brands needing professional, crush-resistant mailing boxes in bulk–50 boxes per bundle.
Boxes - Mailers

12x12x2 White Corrugated Literature Mailers 50-Pack

PN: M12122

12 x 12 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$73.68 / BUNDLE
IN STOCK Ship marketing materials and documents in style with these professional 12x12x1.25 white corrugated literature mailers. Featuring snug-fitting self-seal tabs for secure closure and crush-resistant ECT-32-B construction, each bundle of 50 requires zero additional supplies–just fold, tuck, and ship. Perfect for e-commerce brands that demand professional presentation without custom carton costs.
Boxes - Mailers

12x12x1.25 White Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML12121

12 x 12 x 1 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$79.75 / BUNDLE
IN STOCK Pre-sized white corrugated literature mailers eliminate custom carton costs while maintaining professional presentation. ECT-32-B construction resists crushing and puncture damage during shipping. Quick fold-and-tuck assembly requires no additional supplies–get 50 mailers per bundle.
Boxes - Mailers

12x11.75x3.25 White Corrugated Literature Mailers 50-Pack

PN: M3RBXL

12 x 11.75 x 3 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$94.94 / BUNDLE
IN STOCK Professional 12x9x3 white literature mailers built from durable ECT-32-B corrugated material. Self-sealing tuck tabs require no additional supplies–just fold and ship. Sold in bundles of 50 for cost-effective bulk ordering.
Boxes - Mailers

12x9x3 White Self-Seal Corrugated Literature Mailers 50-Pack

PN: ML1293

12 x 9 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$106.34 / BUNDLE
IN STOCK Ship literature, catalogs, and promotional materials with confidence using these 12x9x2 white corrugated mailers. Featuring ECT-32-B crush-resistant construction and a secure tab-and-slot closure that requires no additional supplies. Sold in convenient bundles of 50–the cost-effective alternative to custom cartons.
Boxes - Mailers

12x9x2 White Corrugated Literature Mailers 50/Bundle

PN: ML1292R

12 x 9 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$60.00 / BUNDLE
IN STOCK Professional white corrugated literature mailers sized 11.75" x 10.75" x 4" with self-sealing tabs for secure, no-tools closure. ECT-32-B crush-resistant construction protects contents during transit. Sold as a bundle of 50–ready to assemble and ship today.
Boxes - Mailers

11.75x10.75x4 White Corrugated Literature Mailers 50-Pack

PN: M11104

11 3/4 x 10.75 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$120.77 / BUNDLE
IN STOCK Professional white corrugated literature mailers sized 11 3/4 x 10 3/4 x 2 1/4 inches–the ideal solution for e-commerce brands shipping catalogs, brochures, and promotional materials without custom carton costs. Strong ECT-32-B construction with secure self-seal tuck tabs. Sold as a bundle of 50, ready to assemble and ship immediately.
Boxes - Mailers

11.75x10.75x2.25 White Corrugated Literature Mailers 50-Pack

PN: M3RB

11 3/4 x 10.75 x 2 1/4 in ECT-32-B Corrugated 50 PER BUNDLE
$44.05 / BUNDLE
IN STOCK Ship marketing materials and product literature with professional presentation using these 11.5x11.5x3.75" white corrugated mailers. ECT-32-B construction provides crush resistance and structural integrity, while self-sealing tabs ensure secure closure without additional supplies. Bundle of 50 ready-to-assemble cartons eliminates custom design costs.
Boxes - Mailers

11.5x11.5x3.75 White Corrugated Literature Mailers 50-Pack

PN: M11113

11 1/2 x 11 1/2 x 3 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$107.86 / BUNDLE

Product Help Request

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Buying path

Buy Boxes & Mailers by the specs that change the order

Use filters, product titles, and product pages to compare size, material, pack count, case quantity, and fit before ordering.

Compare

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Reorder

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Larger orders

For pallet, recurring, or mixed-SKU orders, send your list and ZIP and get a delivered price by email.

What to check first

  • Inside dimensions
  • Board grade or strength rating
  • Box style and closure
  • Case or bundle quantity
Common wrong-order risk: Choosing the outside size instead of the inside size. Confirm product fit, void fill, and storage space before ordering.
Use the box size finder -> Get a delivered quote for larger orders -> Compare corrugated box types -> View products below ->