5x5x3 ECT-32 Kraft Corrugated Mailers 50-Pack M553K
$54.40
/ bundle of 50$1.09 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
5" × 5" × 3"
Board / material
ECT-32-B Corrugated
Color
Kraft
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 | 5" × 5" × 3" (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 | 7.58 lb |
| Outer carton (shipping) | 20.0 × 15.5 × 5.5 in |
| LTL freight class | Class 125 |
| SKU | M553K |
About this item
SKU M553K — 5" × 5" × 3", ECT-32-B Corrugated, Kraft. Sold as a bundle of 50, shipped from US warehouses.
5x5x3 ECT-32 kraft corrugated mailers 50-Pack. A presentation-style mailer for subscription boxes and branded e-commerce orders. ECT-32 rated corrugated board. Natural kraft finish. This is the kraft version; a white version is a separate listing. Shoppers also call these corrugated box mailers, literature mailers, or e-commerce mailer boxes. 50-pack: 50 mailers in the bundle.
Common questions
What does ECT-32-B mean and why does it matter?
ECT (Edge Crush Test) 32-lb rating indicates the corrugated can withstand 32 pounds of force per lineal inch before crushing. This mid-tier strength is ideal for small parcels with moderate fragility; it balances protection with cost efficiency for high-volume shipping operations.
Do I need tape or adhesive to seal these mailers?
No. The one-piece fold-and-tuck design requires zero tape, glue, or staples. Simply fold the flaps together, the structure self-locks. This eliminates supply costs and reduces packing time by approximately 40% versus traditional boxes.
How much weight can a 553 mailer handle in stacking scenarios?
ECT-32-B corrugated supports approximately 8-12 lbs per mailer when stacked 4-5 units high in a warehouse setting. For heavier items or higher stacks, upgrade to ECT-44-B or ECT-48-B variants. Consult our freight engineering team for custom load calculations.
What's the postage savings versus heavier corrugated alternatives?
Kraft ECT-32-B mailers weigh 60-70% less than ECT-48-B equivalents, reducing USPS and UPS dimensional/actual weight charges. For 1,000-unit monthly volumes, typical savings range $200 - $400 depending on shipping zone and carrier selection.
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Questions on specs or freight?
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