In stock SKU M444KGTIN 848109008592

4x4x4 Kraft Corrugated Mailers - ECT-32 Crush Resistant, Bundle of 50

Ship small, fragile items with confidence using these ECT-32-B kraft corrugated mailers. One-piece fold-and-tuck design requires no tape, glue, or staples–ready to use in seconds. Bundle of 50 ships and stores flat, maximizing warehouse efficiency while reducing postage costs.
$37.56 / bundle of 50$0.75 per mailer
= 50 mailers · Total $37.56
Request bulk pricing

Ships from the nearest of 5 US warehouses · freight calculated at checkout

30-day returns on stock items · Return policy

Inside dimensions 4" × 4" × 4"
Board / material ECT-32-B Corrugated
Color Kraft
Freight class Class 125

Specifications

Inside dimensions4" × 4" × 4" (L × W × H)
Board / materialECT-32-B Corrugated
ColorKraft
Sold asBundle of 50
Order in multiples of50
Bundle weight7.04 lb
Outer carton (shipping)19.0 × 12.75 × 6.0 in
LTL freight classClass 125
GTIN848109008592
SKUM444K

About this item

SKU M444K — 4" × 4" × 4", ECT-32-B Corrugated, Kraft. Sold as a bundle of 50, shipped from US warehouses.

4x4x4 Kraft Corrugated Mailers - ECT-32, Bundle of 50. Use this item for shipments or presentation packs where the product fits the listed inside dimensions and closure style. Listed specs include size 4 x 4 x 4 in; material kraft; sold as Bundle of 50. Confirm SKU, pack count, price, availability, and checkout delivery before ordering.

Frequently bought with

Common questions

What does ECT-32-B mean, and how does it compare to other corrugated grades?
ECT (Edge Crush Test) -32-B indicates a 32 lb/in crush rating with B-flute corrugation, the standard for small parcel mailers. This grade handles typical small-item loads (under 5 lbs) with reliable stacking performance in warehouse environments while maintaining cost efficiency at scale.
Do these mailers require tape, glue, or staples to close?
No. The fold-and-tuck design allows mailers to assemble and close in seconds with zero additional materials. This accelerates packing speed, eliminates supply chain dependency on adhesives, and reduces fulfillment labor costs per unit.
How much space do these save compared to pre-assembled boxes?
Flat-shipped mailers reduce inbound dimensional weight by 70-80% versus pre-assembled boxes, lowering freight costs significantly. A pallet of 4,000 units (80 bundles) occupies minimal warehouse space, freeing capacity for higher-velocity SKUs.
Are these mailers suitable for stacking during storage?
Yes. The ECT-32-B kraft corrugated provides reliable crush resistance for stacking flat bundles in warehouses. Individual assembled mailers also stack securely on pallets, maintaining product integrity throughout the fulfillment cycle.

Order support

Questions on specs or freight?

Send the SKU, quantity, and delivery ZIP and we will confirm specs, availability, and freight before you order.

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