In stock SKU M643KGTIN 848109008615

6x4x3 Kraft Corrugated Mailers ECT-32-B Crush Resistant - 50 Pack

ECT-32-B kraft corrugated mailers engineered for small item protection and maximum freight efficiency. One-piece fold-and-tuck design–no tape, glue, or staples required. Ships and stores flat in 50-pack bundles to reduce warehouse space and cut postage costs.
$34.94 / bundle of 50$0.70 per mailer
= 50 mailers · Total $34.94
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 6" × 4" × 3"
Board / material ECT-32-B Corrugated
Color Kraft
Freight class Class 125

Specifications

Inside dimensions6" × 4" × 3" (L × W × H)
Board / materialECT-32-B Corrugated
ColorKraft
Sold asBundle of 50
Order in multiples of50
Bundle weight7.42 lb
Outer carton (shipping)18.0 × 14.75 × 5.5 in
LTL freight classClass 125
GTIN848109008615
SKUM643K

About this item

SKU M643K — 6" × 4" × 3", ECT-32-B Corrugated, Kraft. Sold as a bundle of 50, shipped from US warehouses.

6x4x3 Kraft Corrugated Mailers ECT-32-B - 50 Pack. Use this item for shipments or presentation packs where the product fits the listed inside dimensions and closure style. Listed specs include size 6 x 4 x 3 in; material kraft; sold as Bundle 50. Confirm SKU, pack count, price, availability, and checkout delivery before ordering.

Frequently bought with

Common questions

What does ECT-32-B mean, and why does it matter for my shipping needs?
ECT (Edge Crush Test) 32-B indicates the corrugated board can withstand 32 pounds of force per linear inch before crushing. This rating ensures reliable protection under typical stacking and transport conditions, making it ideal for fragile items and multi-tier warehouse operations without cost premiums.
How quickly can my team assemble these mailers during peak fulfillment?
These one-piece mailers fold together in seconds with zero fasteners, no tape, glue, or staples required. A single operator can prepare 300+ mailers per hour, dramatically accelerating packing line throughput during peak seasons.
Will these mailers reduce my per-package shipping costs?
Yes. The lightweight kraft construction and compact 6 x 4 x 3" footprint lower dimensional weight charges, while flat-ship storage eliminates assembly labor and inbound freight waste. Most operations see 8 - 15% postage savings versus rigid or heavier alternatives.
Can I stack these mailers during storage or transit without damage?
Absolutely. ECT-32-B kraft corrugated provides excellent stacking performance when flat-stored or when assembled. The double-wall construction on front and sides protects contents under realistic warehouse stacking loads while maintaining structural integrity throughout the supply chain.

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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