In stock SKU M743GTIN 812578008308

7x4x3" ECT-32-B White Corrugated Mailers - Crush Resistant, 50-Pack

Industrial-grade ECT-32-B white corrugated mailers engineered for maximum crush resistance with minimal weight. One-piece fold-and-tuck design ships securely in seconds–no tape or staples required. 50-pack bundle optimizes your fulfillment workflow and reduces packaging costs.
$25.92 / bundle of 50$0.52 per mailer
= 50 mailers · Total $25.92
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 7" × 4" × 3"
Board / material ECT-32-B Corrugated
Color White
Freight class Class 125

Specifications

Inside dimensions7" × 4" × 3" (L × W × H)
Board / materialECT-32-B Corrugated
ColorWhite
Sold asBundle of 50
Order in multiples of50
Bundle weight8.02 lb
Outer carton (shipping)18.0 × 15.75 × 5.5 in
LTL freight classClass 125
GTIN812578008308
SKUM743

About this item

SKU M743 — 7" × 4" × 3", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.

7x4x3" ECT-32-B White Corrugated Mailers, 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 7 x 4 x 3 in; material corrugated; 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 why does it matter?
ECT (Edge Crush Test) -32 indicates the corrugated can withstand 32 lbs of pressure per linear inch before crushing. The B designation specifies a 200# board grade, ideal for lightweight items. This rating prevents product damage during stacking and transit, reducing return rates and customer complaints.
How many of these boxes fit on a standard pallet?
When flat-stacked in bundles of 50, you can stage 10-12 bundles (500-600 mailers) per pallet. This density translates to ~$12-15 freight savings per pallet versus pre-assembled mailers, with zero damage during consolidation.
Do I need tape or additional sealing materials?
No. The one-piece design folds and tucks in 3-4 seconds without tape, glue, or staples. You save approximately $0.04-0.08 per mailer on tape and labor, which adds up to $2-4 per bundle of 50.
What's the dimensional weight impact on carrier fees?
At 7 x 4 x 3 inches, this mailer keeps dimensional weight at 84 cubic inches. Most carriers charge dimensional weight only when exceeding 166 cubic inches, so you avoid surcharges on USPS, UPS, and FedEx for items under 5 lbs, typically saving $0.15-0.35 per shipment at scale.

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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