4.375x4.375x3.5 ECT-32 White Corrugated Mailers 50-Pack
$28.10
/ bundle of 50$0.56 per mailer
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| Quantity (bundle) | Item-subtotal discount |
|---|---|
| 1–2 | Base item price |
| 3–5 | 3% off qualifying item subtotal |
| 6+ | 5% off qualifying item subtotal |
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Shipping & returns details
Ships from U.S. warehouses. 30-day returns on unopened stock items.
Shipping cost and timing depend on the product, quantity and destination. Parcel or freight service is used as appropriate. Shipping discounts apply only to qualifying orders and rates.
Standard delivery is to street addresses in the contiguous U.S. Eligible returns must be unused and in original packaging; return shipping may apply.
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Inside dimensions
4 3/8" × 4 3/8" × 3 1/2"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
From our customers
“The packaging is sturdy, well-made, and looks professional. We’re really pleased with the quality.”
“They helped us choose the right packaging for our products and made ordering easy.”
“Ordering was easy, everything arrived as described, and we’ll definitely order again.”
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Specifications
| Inside dimensions | 4 3/8" × 4 3/8" × 3 1/2" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 50 |
| Physical units per order increment | 50 (one bundle) |
| Bundle weight | 7.18 lb |
| Outer carton (shipping) | 20.0 × 14.0 × 6.0 in |
| LTL freight class | Class 125 |
| GTIN | 812578007943 |
| SKU | MLR2 |
About this item
SKU MLR2 — 4 3/8" × 4 3/8" × 3 1/2", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.
The 4 3/8x4 3/8x3 1/2 White ECT-32 Corrugated Mailers - Crush Resistant is a corrugated mailer for books, catalogs, apparel, subscription kits, samples, documents, and small e-commerce orders. Listed specs include inside dimensions 4 3/8" x 4 3/8" x 3 1/2"; white material; ECT-32; 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-B corrugated rating mean for my operation?
ECT-32-B indicates edge crush test strength of 32 lbs per inch of width. This rating ensures reliable stacking performance up to 5-6 layers in typical warehouse conditions, reducing product damage and returns while maintaining structural integrity during automated sorting and handling.
How much assembly labor and tape does one-piece design save?
The fold & tuck design eliminates tape, glue, and stapling requirements, saving 8-12 seconds per box versus traditional RSC assembly. For high-volume fulfillment centers processing 1,000+ units daily, this reduces labor costs by 15-25% while eliminating tape inventory management.
Will these mailers pass carrier dimensional weight pricing thresholds?
Yes. At 4 3/8" x 4 3/8" x 3 1/2", this mailer is specifically engineered to remain below most carrier dimensional weight triggers while providing crush protection for small lightweight items, optimizing your cost per shipment.
Can I stack these mailers with product inside without crush damage?
ECT-32-B corrugated with double-wall construction on front and sides supports safe stacking of 5-6 mailers high when filled with typical lightweight products (under 2 lbs). For heavier or fragile contents, reduce stack height to 3-4 layers to maintain protection integrity.
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.