In stock SKU M974K

9x7x4 ECT-32-B Kraft Corrugated Mailers 50/Bundle M974K

$70.43 / bundle of 50$1.41 per mailer
= 50 mailers · Item subtotal $70.43

Before shipping and tax. Final discounts and total are confirmed in the cart.

Request bulk pricing
Secure checkout
  • Visa
  • Mastercard
  • PayPal
  • American Express
  • Apple Pay
  • Google Pay
  • Shop Pay
  • Discover
  • Diners Club
  • Ach Direct Debit
Volume pricing — applied automatically in the cart
Quantity (bundle)Item-subtotal discount
1–2Base item price
3–53% off qualifying item subtotal
6+5% off qualifying item subtotal
Pallet or repeat ordersGet a delivered quote
Shipping & deliveryCheck cost to your ZIP code
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.

Shipping policyReturn policy

Need a hand? Talk to our team

Inside dimensions 9" × 7" × 4"
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.”

Kerri PorterAmerican Vulkan

“They helped us choose the right packaging for our products and made ordering easy.”

Scott HobbsPackrift customer

“Ordering was easy, everything arrived as described, and we’ll definitely order again.”

Cheryl ChristSimply Home Relocation
Questions before you order?Talk to us

Specifications

Inside dimensions9" × 7" × 4" (L × W × H)
Board / materialECT-32-B Corrugated
ColorKraft
Sold asBundle of 50
Physical units per order increment50 (one bundle)
Bundle weight16.18 lb
Outer carton (shipping)27.0 × 24.0 × 5.75 in
LTL freight classClass 125
SKUM974K

About this item

SKU M974K — 9" × 7" × 4", ECT-32-B Corrugated, Kraft. Sold as a bundle of 50, shipped from US warehouses.

9x7x4" kraft corrugated mailers in ECT-32-B corrugated board, packed 50 per bundle (SKU M974K); this is a second listing of the same BOX case stock at the same price.

Sized for shipping and fulfillment work; closes with tape or the built-in flap. Order by the bundle of 50.

Common questions

What does ECT-32-B mean, and how does it compare to other corrugated grades?
ECT (Edgewise Crush Test) 32 indicates this kraft corrugated can withstand 32 lbs of force per inch of edge before crushing. ECT-32-B is ideal for small parcels and lightweight items; it offers excellent protection-to-weight ratio, reducing postage while maintaining durability for typical B2B shipping.
How much assembly time and labor does the fold-and-tuck design save?
One-piece fold-and-tuck mailers assemble in seconds with zero tools or materials required. Compared to tape-and-glue assembly, you eliminate 3 - 5 seconds of labor per box and eliminate tape and staple inventory costs, saving 15 - 20% on fulfillment labor for high-volume operations.
Can these mailers be stacked for storage, and what's the space savings?
Yes. When stored flat, a bundle of 50 occupies just 3 - 4 cubic feet. Compared to pre-assembled mailers (which require 15 - 20 cubic feet), flat storage saves 75 - 80% of warehouse space and reduces shipping costs for your inbound orders.
Are these mailers suitable for heavier items or fragile goods?
The ECT-32-B double-wall construction provides crush resistance for items up to 5 lbs and excellent protection for fragile goods like glassware, tools, and electronics. For items over 5 lbs or extreme impact applications, consider higher ECT ratings (ECT-44 or ECT-48).

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.