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 ECT-32-B white corrugated mailers deliver double-wall crush resistance in a lightweight, one-piece fold-and-tuck design. At 18" x 4" x 4", these mailing boxes require no tape, glue, or staples–fold in seconds and ship. 50-box bundle reduces per-unit costs and freight overhead for high-volume fulfillment operations.
Boxes - Mailers

18x4x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1844

18 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$82.79 / BUNDLE
IN STOCK Premium ECT-32 white corrugated mailers deliver crush-resistant protection with zero assembly time. One-piece fold-and-tuck design collapses flat for storage and unfolds with double-wall coverage on front and sides. Ships 50 mailers per bundle–ideal for high-volume e-commerce, fulfillment centers, and warehouse operations.
Boxes - Mailers

17.5x3.5x3.5 ECT-32 White Corrugated Mailers 50/Bundle

PN: MLR84

17 1/2 x 3.5 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$46.03 / BUNDLE
IN STOCK ECT-32-B white corrugated mailers deliver professional protection in a one-piece fold-and-tuck design–no tape, glue, or staples required. These 17x6x6 crush-resistant mailers feature double-wall protection on front and sides, reducing product damage and freight costs per unit. Sold in bundles of 50 for immediate stocking.
Boxes - Mailers

17x6x6 ECT-32 White Corrugated Mailers 50-Pack

PN: M1766

17 x 6 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$107.86 / BUNDLE
IN STOCK One-piece 16x6x6 white corrugated mailers with double-wall crush resistance on front and sides–no tape, glue, or staples required. Manufactured from ECT-32-B material for superior stacking performance and lightweight postage savings. Sold as a bundle of 50 units.
Boxes - Mailers

16x6x6 ECT-32 White Corrugated Mailers 50-Pack

PN: M1666

16 x 6 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$102.54 / BUNDLE
IN STOCK Heavy-duty ECT-32-B white corrugated mailers in 16x6x4" size fold flat for maximum freight efficiency and crush resistance. One-piece die-cut design requires no tape, glue, or staples–assembly takes seconds. Sold as 50-unit bundles for wholesale volume savings.
Boxes - Mailers

16x6x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1664

16 x 6 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$101.02 / BUNDLE
IN STOCK ECT-32-B white corrugated mailers deliver crush-resistant protection with zero assembly time–fold-and-tuck design requires no tape, glue, or staples. These 16x5x5 one-piece mailers provide double-wall protection on front and sides while reducing dimensional weight for freight savings. Ideal for fulfillment centers shipping small, lightweight items in bulk.
Boxes - Mailers

16x5x5 ECT-32 White Corrugated Mailers 50-Pack

PN: M1655

16 x 5 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$96.46 / BUNDLE
IN STOCK Ship with confidence using these 16x4x4 white corrugated mailers manufactured from ECT-32-B material. One-piece fold-and-tuck design eliminates tape, glue, and staples while delivering double-wall crush resistance. Sold as a bundle of 50–reduce labor time and maximize freight efficiency on lightweight shipments.
Boxes - Mailers

16x4x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1644

16 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$94.94 / BUNDLE
IN STOCK Engineered ECT-32-B white corrugated mailers in 15x7x5" dimensions deliver crush-resistant protection with zero assembly hassle–fold and ship in seconds. One-piece design eliminates tape, glue, and staples while doubling wall protection on front and sides. Lightweight construction reduces dimensional weight charges. Bundle of 50 units.
Boxes - Mailers

15x7x5 ECT-32 White Corrugated Mailers 50-Pack

PN: M1575

15 x 7 x 5 in ECT-32-B Corrugated 50 PER BUNDLE
$105.58 / BUNDLE
IN STOCK Heavy-duty ECT-32-B white corrugated mailers in 15x2x2 dimensions deliver double-wall crush resistance without tape, glue, or staples. These one-piece folding mailers reduce labor and material costs while protecting small, lightweight items during shipping. Bundle of 50 units ready to deploy in your fulfillment operation.
Boxes - Mailers

15x2x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M1522

15 x 2 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$44.81 / BUNDLE
IN STOCK Ship lightweight fragile items with confidence using these ECT-32-B white corrugated mailers. One-piece fold-and-tuck design delivers double-wall crush protection without tape, glue, or staples. 50-box bundle reduces per-unit costs and speeds fulfillment operations.
Boxes - Mailers

14x6x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1464

14 x 6 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$85.07 / BUNDLE
IN STOCK Ship small, lightweight items with confidence using these ECT-32-B white corrugated mailers. One-piece fold-and-tuck design delivers double-wall protection on front and sides without tape, glue, or staples. Each bundle contains 50 ready-to-use 14x6x2 mailers.
Boxes - Mailers

14x6x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M1462

14 x 6 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$80.51 / BUNDLE
IN STOCK One-piece white corrugated mailers with double-wall crush resistance on front and sides–no tape, glue, or staples required. ECT-32-B rated for reliable protection of lightweight, fragile items. Fold flat to reduce freight costs and warehouse footprint.
Boxes - Mailers

14x4x4 ECT-32 White Corrugated Mailers 50-Pack

PN: M1444

14 x 4 x 4 in ECT-32-B Corrugated 50 PER BUNDLE
$74.44 / BUNDLE
IN STOCK Premium 14" x 4" x 2" white corrugated mailers engineered from ECT-32-B material for maximum crush resistance and lightweight shipping efficiency. One-piece fold-and-tuck design eliminates tape, glue, and staples–assemble in seconds. Bundle of 50 mailers reduces per-unit cost and freight expenses for high-volume shippers.
Boxes - Mailers

14x4x2 ECT-32 White Corrugated Mailers 50-Pack

PN: M1442

14 x 4 x 2 in ECT-32-B Corrugated 50 PER BUNDLE
$61.52 / BUNDLE
IN STOCK Save on postage with lightweight, crush-resistant 14x3x3 white corrugated mailers. ECT-32-B rated construction provides double-wall protection on front and sides. One-piece fold-and-tuck design requires no tape, glue, or staples–perfect for high-volume shipping operations. 50-pack bundle.
Boxes - Mailers

14x3x3 ECT-32 White Corrugated Mailers 50-Pack

PN: M1433

14 x 3 x 3 in ECT-32-B Corrugated 50 PER BUNDLE
$58.49 / BUNDLE
IN STOCK Lightweight one-piece white corrugated mailers built from ECT-32-B material for maximum crush resistance and freight efficiency. Pre-scored design folds in seconds with no tape, glue, or staples required. Perfect for small, lightweight items–50 mailers per bundle.
Boxes - Mailers

13.5x3.5x3.5 ECT-32 White Corrugated Mailers 50-Pack

PN: MLRBL

13 1/2 x 3.5 x 3 1/2 in ECT-32-B Corrugated 50 PER BUNDLE
$41.78 / BUNDLE
IN STOCK Ship with confidence using these ECT-32-B white corrugated mailers engineered for maximum crush resistance and minimal prep time. The one-piece fold-and-tuck design eliminates tape, glue, and staples while doubling protection on front and sides. At 12" 9" 6", this 50-pack bundle delivers freight-efficient packaging for small parcels without sacrificing durability.
Boxes - Mailers

12x9x6 ECT-32 White Corrugated Mailers 50/Bundle

PN: MLR1296

12 x 9 x 6 in ECT-32-B Corrugated 50 PER BUNDLE
$154.95 / 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

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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 ->