6x4x4 ECT-32-B White Corrugated Mailers 50/Bundle
$30.83
/ bundle of 50$0.62 per mailer
Request bulk pricing
| Quantity (bundle) | Item-subtotal discount |
|---|---|
| 1–2 | Base item price |
| 3–5 | 3% off qualifying item subtotal |
| 6+ | 5% off qualifying item subtotal |
In stock · ships within 1 business day from the nearest of 5 US warehouses (IL, PA, TX, GA, CA) · 1–5 business days in transit · freight calculated at checkout · free ground shipping on orders over $99 (parcel rates up to $29.95) and over $500 (up to $120)
30-day returns on stock items · Return policy
Inside dimensions
6" × 4" × 4"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 6" × 4" × 4" (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 | 8.84 lb |
| Outer carton (shipping) | 21.0 × 14.75 × 5.5 in |
| LTL freight class | Class 125 |
| GTIN | 812578008162 |
| SKU | M644 |
About this item
SKU M644 — 6" × 4" × 4", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.
The 6x4x4 ECT-32-B White 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 6" x 4" x 4"; 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-B mean, and why does it matter for my operation?
ECT (Edge Crush Test) 32-B indicates 32 lbs per inch of edge crush strength with B-flute corrugation. This rating ensures reliable protection for lightweight parcels while keeping material costs and shipping weight low, critical for high-volume fulfillment centers managing margin pressure.
Do I need tape or adhesive to close these mailers?
No. The one-piece design features integrated fold-and-tuck flaps that secure without tape, glue, or staples. This speeds packing by 15, 20 seconds per box and eliminates consumable costs.
What's the maximum weight these mailers can safely handle?
ECT-32-B mailers safely support 4, 5 lbs without crush risk under normal handling. For heavier items, consider ECT-44 or ECT-51 corrugated alternatives available in our catalog.
How do these compare to kraft paper mailers or padded envelopes in terms of freight efficiency?
Corrugated mailers provide crush resistance compared to padded envelopes while maintaining lower dimensional weight than rigid boxes. This reduces parcel surcharges and damage rates, delivering 20, 30% cost savings on high-volume shipping programs.
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.