Boxes & Mailers

SELECTION EXPERT ADVICE

Wall Strength & Load Capacity
MORE INFO
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
MORE INFO
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
MORE INFO
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 Premium 6x4x1 white corrugated mailers manufactured from ECT-32-B material deliver crush-resistant protection with zero assembly hassle. One-piece fold-and-tuck design eliminates tape, glue, and staples–ideal for fulfillment centers and warehouse operations shipping lightweight items at scale. Bulk 50-pack reduces per-unit costs and maximizes freight efficiency.
Boxes - Mailers

6x4x1 ECT-32-B White Corrugated Mailers 50-Pack

PN: M641

6 x 4 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$34.94 / BUNDLE
IN STOCK Save on labor and freight with these ECT-32-B one-piece mailers that fold flat and assemble in seconds–no tape, glue, or staples required. The 6x3 5/8x2 white corrugated design delivers double-wall crush resistance on front and sides, protecting lightweight items while reducing dimensional weight charges. Bulk 50-pack pricing makes this the efficient choice for high-volume fulfillment operations.
Boxes - Mailers

6x3.625x2 ECT-32 White Corrugated Mailers 50-Pack

PN: MLRBC

6 x 3 5/8 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$28.10 / BUNDLE
IN STOCK Ship small fragile items with confidence using these ECT-32-B white corrugated mailers. The one-piece fold-and-tuck design creates double-wall protection on front and sides–no tape, glue, or staples required. Bundle of 50 reduces per-unit cost and cuts your shipping overhead.
Boxes - Mailers

6" x 3" x 3" White Corrugated Mailers, ECT-32-B, self-locking one-piece construction. 50 per bundle.

PN: M633

6 x 3 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$21.96 / BUNDLE
IN STOCK Protect small items with zero assembly hassle. These ECT-32-B white corrugated mailers fold in seconds with no tape, glue, or staples–double-wall crush resistance on front and sides. 6x3x2 dimensions, sold as a 50-count bundle for warehouse-efficient shipping.
Boxes - Mailers

6x3x2 ECT-32-B White Corrugated Mailers

PN: M632

6 x 3 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$17.52 / BUNDLE
IN STOCK Premium ECT-32-B white corrugated mailers sized 6" 2.5" 2.38" for small, lightweight shipments. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Crush-resistant double-wall construction protects contents while reducing dimensional weight charges. Sold in bundles of 50.
Boxes - Mailers

6x2.5x2.38 ECT-32 White Corrugated Mailers 50/Bundle

PN: MRX3L

6 x 2.5 x 2 3/8 in ECT-32-B Corrugated 50 PER BUNDLE
$19.75 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B white corrugated mailers. One-piece fold-and-tuck design delivers double-wall crush resistance on front and sides–no tape, glue, or staples required. Bundle of 50 reduces per-unit costs and streamlines your fulfillment operation.
Boxes - Mailers

6x2.5x1.75 ECT-32 White Corrugated Mailers 50/Bundle

PN: MRX2L

6 x 2.5 x 1 3/4 in ECT-32-B Corrugated 50 PER BUNDLE
$24.59 / BUNDLE
IN STOCK Ship lightweight items safely with these ECT-32-B white corrugated mailers in 6x2.5x1 dimensions. One-piece fold-and-tuck design creates double-wall protection on front and sides–no tape, glue, or staples required. Sold as a bundle of 50 units for maximum freight efficiency.
Boxes - Mailers

6x2.5x1 ECT-32 White One-Piece Corrugated Mailers 50/Bundle

PN: MRX1L

6 x 2.5 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$20.12 / BUNDLE
IN STOCK Ship small items fast with zero assembly. These ECT-32-B white corrugated mailers feature crush-resistant double-wall construction on front and sides, fold flat for storage, and require no tape, glue, or staples. Bundle of 50 mailers ready to ship.
Boxes - Mailers

6x2x2 ECT-32-B White Corrugated Mailers 50-Pack

PN: M622

6 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$16.54 / BUNDLE
IN STOCK Ship small items safely with Packrift's 5.5x3.5x3.5 white corrugated mailers. ECT-32-B construction delivers crush resistance on front and sides with one-piece folding design–no tape, glue, or staples required. Bundle of 50 reduces per-unit cost and freight weight for efficient fulfillment operations.
Boxes - Mailers

5.5x3.5x3.5 ECT-32 White Corrugated Mailers 50/Bundle

PN: MSOL

5 1/2 x 3.5 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$32.66 / BUNDLE
IN STOCK Ship with confidence using these ECT-32-B white corrugated mailers engineered for crush resistance and maximum protection. One-piece fold design requires no tape, glue, or staples–assemble in seconds and reduce labor costs. Perfect for warehouse managers and fulfillment directors shipping small items at scale.
Boxes - Mailers

5x5x5 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M555

5 x 5 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$43.29 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B crush-resistant corrugated mailers. The one-piece fold-and-tuck design assembles in seconds without tape, glue, or staples, delivering double-wall protection on front and sides. Each bundle of 50 mailers reduces labor time and cuts postage costs on lightweight shipments.
Boxes - Mailers

5x5x4 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M554

5 x 5 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$39.50 / BUNDLE
IN STOCK Lightweight yet crush-resistant 5x5x3 white corrugated mailers engineered for small package fulfillment. ECT-32-B construction delivers double-wall protection on all shipping sides without tape, glue, or staples. Sold in 50-unit bundles for maximum freight efficiency.
Boxes - Mailers

5x5x3 ECT-32 White Corrugated Mailers 50-Pack

PN: M553

5 x 5 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$30.25 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B white corrugated mailers. Each 5x5x2 one-piece mailer folds in seconds with no tape, glue, or staples required–double-wall crush protection on front and sides keeps contents safe while reducing dimensional weight charges. Order by the bundle of 50 and optimize your fulfillment costs today.
Boxes - Mailers

5x5x2 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M552

5 x 5 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$48.61 / BUNDLE
IN STOCK Save on labor and shipping costs with these one-piece fold-and-tuck white corrugated mailers. ECT-32-B construction delivers crush-resistant protection with double-wall coverage on front and sides–no tape, glue, or staples required. Ships in bundles of 50.
Boxes - Mailers

5x5x1 ECT-32 White Corrugated Mailers 50/Bundle

PN: M551

5 x 5 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$45.57 / BUNDLE
IN STOCK Ship small items safely with these ECT-32-B white corrugated mailers. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Crush-resistant double walls on front and sides deliver reliable protection while keeping postage costs low. Sold in bundles of 50.
Boxes - Mailers

5x4x4 ECT-32-B White One-Piece Corrugated Mailers 50/Bundle

PN: M544

5 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$35.21 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B white corrugated mailers. The one-piece fold-and-tuck design delivers double-wall protection on front and sides–no tape, glue, or staples required. Bundle of 50 units optimizes your fulfillment workflow and reduces per-unit shipping costs.
Boxes - Mailers

5x4x3 ECT-32-B White Corrugated Mailers 50-Pack

PN: M543

5 x 4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$30.97 / 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 ->