5x5x4 ECT-32-B Kraft Corrugated Mailers 50/Bundle
$53.17
/ bundle of 50$1.06 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
5" × 5" × 4"
Board / material
ECT-32-B Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 5" × 5" × 4" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | Kraft |
| Sold as | Bundle of 50 |
| Physical units per order increment | 50 (one bundle) |
| Bundle weight | 10.9 lb |
| Outer carton (shipping) | 23.0 × 15.75 × 6.25 in |
| LTL freight class | Class 125 |
| GTIN | 848109008530 |
| SKU | M554K |
About this item
SKU M554K — 5" × 5" × 4", ECT-32-B Corrugated, Kraft. Sold as a bundle of 50, shipped from US warehouses.
The 5x5x4 Kraft Corrugated Mailers ECT-32-B Crush Resistant is a corrugated mailer for books, catalogs, apparel, subscription kits, samples, documents, and small e-commerce orders. Listed specs include inside dimensions 5" x 5" x 4"; kraft 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 how does it perform in multi-tier stacking?
ECT (Edge Crush Test) 32-lb rating indicates the corrugated can withstand 32 pounds of crushing force per linear inch of edge. ECT-32-B is suitable for single and dual-layer stacking in typical parcel networks; for heavy stacking in warehouses, confirm weight and height limits with your logistics team.
Do these mailers require tape or adhesive, and how does that save money?
No, the fold-and-tuck design closes securely without tape, glue, or staples. This eliminates material costs (tape/adhesive), labor time (2 - 3 seconds per box vs. 10+ seconds with tape), and reduces SKU complexity in inventory.
How much postage savings do these deliver compared to traditional boxes?
Lightweight kraft reduces dimensional weight surcharges, especially with UPS DIM divisor and FedEx DIM factor calculations. A single mailer typically saves $0.15 - $0.35 per shipment at scale; bundles of 50 across monthly volume yield thousands in annual freight savings.
What products should not be shipped in ECT-32-B mailers?
Avoid heavy items over 15 lbs, liquids, or extremely sharp/pointed objects that may puncture walls. For oversized or high-value fragile goods, upgrade to ECT-44-B or add interior cushioning (foam, bubble). Consult carrier weight/dimension limits for your service tier.
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.