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 Save on postage and labor with these ECT-32-B white corrugated mailers. One-piece design folds in seconds with double-wall crush protection on front and sides–no tape, glue, or staples required. Perfect for small, lightweight shipments. 50 mailers per bundle.
Boxes - Mailers

6x6x6 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M666

6 x 6 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$72.92 / BUNDLE
IN STOCK One-piece white corrugated mailers engineered with ECT-32-B material for maximum crush resistance and lightweight shipping efficiency. No tape, glue, or staples required–fold and ship in seconds. Sold as a bundle of 50 boxes to reduce per-unit costs.
Boxes - Mailers

6x6x5 ECT-32 White Corrugated Mailers 50/Bundle

PN: M665

6 x 6 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$78.23 / BUNDLE
IN STOCK Ship small, lightweight items safely with these 6x6x4 white corrugated mailers. ECT-32-B construction delivers crush resistance and double-wall protection without tape or glue. One-piece fold-and-tuck design assembles in seconds–order your 50-pack bundle today.
Boxes - Mailers

6x6x4 ECT-32-B White Corrugated Mailers 50-Pack

PN: M664

6 x 6 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$47.72 / BUNDLE
IN STOCK Reduce shipping costs and eliminate assembly time with these one-piece white corrugated mailers. ECT-32-B construction provides double-wall crush resistance on front and sides–no tape, glue, or staples required. Perfect for high-volume fulfillment centers shipping lightweight items.
Boxes - Mailers

6x6x3 ECT-32-B White Corrugated Mailers 50-Pack

PN: M663

6 x 6 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$80.23 / BUNDLE
IN STOCK ECT-32-B white corrugated mailers engineered for small package protection without the hassle. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Bundle of 50 crush-resistant boxes reduces fulfillment labor while cutting dimensional weight charges.
Boxes - Mailers

6x6x2 ECT-32-B White Corrugated Mailers 50/Case

PN: M662

6 x 6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$70.93 / BUNDLE
IN STOCK Ship small, lightweight items safely with these 6x6x1 white corrugated mailers made from durable ECT-32-B material. One-piece fold-and-tuck design requires no tape, glue, or staples–saving time and labor on every shipment. Bundle of 50 mailers delivers cost-effective protection and freight efficiency for high-volume fulfillment operations.
Boxes - Mailers

6x6x1 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M661

6 x 6 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$41.78 / BUNDLE
IN STOCK Ship small items with confidence using these ECT-32-B white corrugated mailers. The one-piece fold-and-tuck design provides double-wall crush resistance on front and sides–no tape, glue, or staples required. Bundle of 50 reduces per-unit costs and assembly time.
Boxes - Mailers

6x5x5 ECT-32 White Corrugated Mailers 50-Pack

PN: M655

6 x 5 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$67.60 / BUNDLE
IN STOCK ECT-32-B white corrugated mailers deliver superior crush resistance with a one-piece fold-and-tuck design that requires no tape, glue, or staples. At 6" x 5" x 4", these lightweight cardboard mailing boxes reduce postage costs while protecting small, lightweight items with double-wall protection on front and sides. Bundle of 50 boxes per pack.
Boxes - Mailers

6x5x4 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M654

6 x 5 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$64.56 / BUNDLE
IN STOCK Lightweight, crush-resistant 6x5x3 white corrugated mailers engineered for high-volume small package shipping. ECT-32-B corrugated construction delivers double-wall protection on front and sides with zero assembly time–just fold and ship. 50-piece bundle reduces per-unit cost and freight overhead.
Boxes - Mailers

6x5x3 ECT-32 White Corrugated Mailers 50-Pack

PN: M653

6 x 5 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$61.52 / BUNDLE
IN STOCK ECT-32-B white corrugated mailers engineered for lightweight fragile items and small parcel shipping. One-piece fold-and-tuck design with double-wall crush resistance on front and sides–no tape, glue, or staples required. Bulk 50-pack saves labor and reduces per-unit costs for high-volume fulfillment operations.
Boxes - Mailers

6x5x2 ECT-32-B White Corrugated Mailers 50-Pack

PN: M652

6 x 5 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$50.13 / BUNDLE
IN STOCK Professional-grade 6x5x1 white corrugated mailers manufactured from ECT-32-B material with crush-resistant, double-wall construction on front and sides. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Sold in bundles of 50 for maximum freight efficiency and cost savings.
Boxes - Mailers

6x5x1 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M651

6 x 5 x 1 in ECT-32-B Corrugated 50 PER BUNDLE
$46.20 / BUNDLE
IN STOCK Ship small, lightweight items with confidence using these ECT-32-B white corrugated mailers. One-piece fold-and-tuck design requires no tape, glue, or staples–assembly takes seconds. Double-wall crush-resistant construction protects contents while reducing dimensional weight charges. 50-box bundle.
Boxes - Mailers

6x4x4 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M644

6 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$30.83 / BUNDLE
IN STOCK Lightweight yet durable ECT-32-B corrugated mailers in 6x4x3" dimensions. One-piece fold-and-tuck design requires no tape, glue, or staples–assemble in seconds while maintaining crush-resistant double-wall protection on front and sides. Sold as 50-count bundle for maximum volume savings.
Boxes - Mailers

6x4x3 ECT-32-B White Corrugated Mailers 50/Bundle

PN: M643

6 x 4 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$28.61 / BUNDLE
IN STOCK One-piece white corrugated mailers engineered for maximum crush resistance with zero assembly time. ECT-32-B construction delivers double-wall protection on front and sides; no tape, glue, or staples required. Ships in bundles of 50 to reduce per-unit costs on high-volume fulfillment operations.
Boxes - Mailers

6x4x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M642

6 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$22.46 / BUNDLE
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

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 ->