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 Lightweight ECT-32-B white corrugated mailers in 5x4x2 dimensions engineered for small package fulfillment with zero tape requirements. One-piece fold-and-tuck design delivers double-wall crush resistance on front and sides. 50-pack bundle reduces per-unit costs and shipping overhead for high-volume operations.
Boxes - Mailers

5x4x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M542

5 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$25.26 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B white corrugated mailers. One-piece fold-and-tuck design requires no tape, glue, or staples–assemble in seconds and reduce fulfillment labor. Crush-resistant double walls on front and sides protect fragile contents while keeping postage costs low. 50-pack bundle.
Boxes - Mailers

5x3x5 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M535

5 x 3 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$43.22 / BUNDLE
IN STOCK Ship small items with confidence using these 5x3x3 white corrugated mailers manufactured from ECT-32-B material. One-piece fold-and-tuck design requires no tape, glue, or staples–saving assembly time and labor costs. Bundle of 50 crush-resistant mailers delivers double-wall protection on front and sides for maximum freight durability.
Boxes - Mailers

5x3x3 ECT-32 White Corrugated Mailers 50-Pack

PN: M533

5 x 3 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$20.37 / BUNDLE
IN STOCK Industrial-grade 5x3x2 white corrugated mailers built from ECT-32-B material for maximum crush resistance and freight efficiency. One-piece fold-and-tuck design eliminates tape, glue, and assembly labor. Ship 50 mailers per bundle at the lowest cost per unit.
Boxes - Mailers

5x3x2 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M532

5 x 3 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$17.72 / BUNDLE
IN STOCK Ship lightweight items with confidence using these one-piece white corrugated mailers manufactured from durable ECT-32-B material. The 5x3x1 fold-and-tuck design provides double-wall protection on front and sides with zero assembly time–no tape, glue, or staples required. Bulk 50-pack reduces per-unit cost and shipping waste.
Boxes - Mailers

5x3x1 ECT-32-B White Corrugated Mailers 50-Pack

PN: M531

5 x 3 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$25.83 / BUNDLE
IN STOCK Industrial-grade ECT-32-B white corrugated mailers sized 5" x 2" x 2" for lightweight parcel shipping. Crush-resistant one-piece fold-and-tuck construction requires no tape, glue, or staples–assembly takes seconds. Bulk 50-pack bundle maximizes freight efficiency and reduces per-unit packaging costs.
Boxes - Mailers

5x2x2 ECT-32-B White Corrugated Mailers 50-Pack

PN: M522

5 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$13.36 / BUNDLE
IN STOCK Lightweight yet crush-resistant one-piece mailers save on postage while protecting small, fragile shipments. ECT-32-B white corrugated construction with double-wall protection on front and sides. Bundle of 50–no tape, glue, or staples required.
Boxes - Mailers

4.375x4.375x3.5 ECT-32 White Corrugated Mailers 50-Pack

PN: MLR2

4 3/8 x 4 3/8 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$28.10 / BUNDLE
IN STOCK Ship small, lightweight items with confidence using these ECT-32-B white corrugated mailers. One-piece fold-and-tuck design eliminates tape, glue, and staples while providing double-wall crush protection on front and sides. Bundle of 50 mailers reduces per-unit cost and maximizes freight efficiency.
Boxes - Mailers

4 3/8 x 4 3/8 x 2 1/2 in ECT-32 White Corrugated Mailers 50/Bundle

PN: MLR5

4 3/8 x 4 3/8 x 2 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$26.58 / BUNDLE
IN STOCK Lightweight yet crush-resistant one-piece white corrugated mailers engineered for small shipments. ECT-32-B construction delivers double-wall protection on front and sides with zero tape, glue, or staples required. Pack of 50 units saves postage costs while protecting fragile items in transit.
Boxes - Mailers

4 3/8 x 4 3/8 x 2 in ECT-32 White Corrugated Mailers 50-Pack

PN: MLR1

4 3/8 x 4 3/8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$26.58 / BUNDLE
IN STOCK Professional-grade 4x4x4" white corrugated mailers built from ECT-32-B material for maximum crush resistance and freight efficiency. One-piece fold-and-tuck design eliminates tape, glue, and staples–assembly takes seconds. Bulk 50-pack reduces per-unit costs for high-volume fulfillment operations.
Boxes - Mailers

4x4x4 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M444

4 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$28.89 / BUNDLE
IN STOCK Engineered ECT-32-B white corrugated mailers in 4x4x3 dimensions deliver crush-resistant protection with zero assembly time–just fold and ship. Each 50-pack bundle eliminates tape, glue, and staples while cutting postage weight and handling labor. Perfect for small item fulfillment operations managing high volume.
Boxes - Mailers

4x4x3 ECT-32 White Corrugated Mailers 50-Pack

PN: M443

4 x 4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$25.58 / BUNDLE
IN STOCK Ship small, lightweight items with confidence using these 4x4x2 white corrugated mailers engineered from ECT-32-B material. One-piece, fold-and-tuck design with double-wall crush protection requires no tape, glue, or staples–ready to pack in seconds. Bundle of 50 reduces per-unit costs and keeps your fulfillment operation efficient.
Boxes - Mailers

4x4x2 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M442

4 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$20.90 / BUNDLE
IN STOCK ECT-32-B white corrugated mailers in 4x4x1 dimensions deliver double-wall crush resistance without tape, glue, or staples–reducing assembly time and shipping costs. One-piece fold-and-tuck design secures small, lightweight items in seconds. Sold as a bundle of 50 mailers per case.
Boxes - Mailers

4x4x1 ECT-32-B White Corrugated Mailers 50-Pack

PN: M441

4 x 4 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$31.90 / BUNDLE
IN STOCK Lightweight yet crush-resistant one-piece white corrugated mailers sized 4x3x3" for optimal small package shipping. ECT-32-B rated for reliable stacking and impact protection without added tape or assembly labor. Bundle of 50 units reduces per-unit costs and freight overhead for high-volume fulfillment operations.
Boxes - Mailers

4x3x3 ECT-32-B White One-Piece Corrugated Mailers 50-Pack

PN: M433

4 x 3 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$18.59 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B white corrugated mailers. One-piece fold-and-tuck construction delivers double-wall crush protection on front and sides–no tape, glue, or staples required. Save time and reduce per-unit shipping costs with 50 mailers per bundle.
Boxes - Mailers

4x3x2 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M432

4 x 3 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$17.38 / BUNDLE
IN STOCK Ship lightweight, fragile items with confidence using these crush-resistant, one-piece white corrugated mailers. ECT-32-B rated for reliable protection with double-wall construction on front and sides. Fold-and-tuck design eliminates tape, glue, and staples–saving labor time and fulfillment costs per box.
Boxes - Mailers

4x3x1 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M431

4 x 3 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$23.55 / BUNDLE

Product Help Request

Send the SKU, quantity, delivery ZIP, and any required specs so we can route the request.

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

Use filters and product titles to narrow by the specs that affect fit.

Confirm

Open the product page before ordering a case so you can check quantity, unit, and limits.

Reorder

Save the SKU or product link for repeat purchasing and support questions.

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 ->