5x4x3 ECT-32-B White Corrugated Mailers - Crush Resistant, 50-Pack
$30.97
/ bundle of 50$0.62 per mailer
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Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
5" × 4" × 3"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 5" × 4" × 3" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 6.5 lb |
| Outer carton (shipping) | 18.0 × 13.75 × 5.5 in |
| LTL freight class | Class 125 |
| GTIN | 812578007998 |
| SKU | M543 |
About this item
SKU M543 — 5" × 4" × 3", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.
The 5x4x3 ECT-32-B White Corrugated Mailers - Crush Resistant, 50-Pack is a corrugated mailer for books, catalogs, apparel, subscription kits, samples, documents, and small e-commerce orders. Listed specs include inside dimensions 5" x 4" x 3"; white material; ECT-32-B; bundle of 50. The mailer format works when the product needs a presentation-style carton or compact shipping box instead of a standard RSC case.
Ideal for shipping apparel, books, mugs, accessories, gifts, and small fragile items. A sturdy, reliable choice for small-business, Etsy, and ecommerce shippers.
Common questions
What does ECT-32 mean, and why does it matter for my shipping operation?
ECT (Edge Crush Test) rating of 32 indicates the mailer can withstand 32 pounds of force per linear inch before crushing. This rating ensures reliable stacking performance in warehouses and during transport, reducing product damage and costly returns, critical for high-velocity fulfillment centers.
Can these mailers replace my current tape-sealed boxes and reduce labor?
Yes. The one-piece fold-and-tuck design requires no tape, glue, or staples, cutting packing time by 30-50% per unit. Warehouse teams can assemble boxes in seconds, freeing labor for other fulfillment tasks and improving throughput during peak seasons.
How do these mailers perform when stacked in a warehouse or on a pallet?
The ECT-32-B corrugated construction and double-wall protection on front and sides provide excellent stacking stability. These mailers support vertical compression without collapsing, allowing you to maximize pallet density and reduce cubic waste in your warehouse footprint.
What shipping cost savings can I expect using these lighter mailers?
Lightweight design reduces dimensional weight surcharges and per-unit postage costs, especially for small parcel carriers. Volume buyers shipping 1,000+ units monthly typically see 8-15% freight savings compared to heavier corrugated or plastic alternatives.
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.