In stock SKU M331GTIN 812578004416

3x3x1 White Corrugated Mailers ECT-32-B - Crush Resistant, Bundle of 50

Engineered for small package fulfillment, these 3x3x1 white corrugated mailers deliver ECT-32-B crush resistance in a one-piece fold-and-tuck design. No assembly required–set up in seconds and reduce labor costs. Bundle of 50 mailers per order.
$14.78 / bundle of 50$0.30 per mailer
= 50 mailers · Total $14.78
Request bulk pricing

Ships from the nearest of 5 US warehouses · freight calculated at checkout

30-day returns on stock items · Return policy

Inside dimensions 3" × 3" × 1"
Board / material ECT-32-B Corrugated
Color White
Freight class Class 125

Specifications

Inside dimensions3" × 3" × 1" (L × W × H)
Board / materialECT-32-B Corrugated
ColorWhite
Sold asBundle of 50
Order in multiples of50
Bundle weight2.36 lb
Outer carton (shipping)10.0 × 9.75 × 5.0 in
LTL freight classClass 125
GTIN812578004416
SKUM331
M331 dimension diagram showing 3 x 3 x 1 inch mailers.
Inside dimensions shown

About this item

SKU M331 — 3" × 3" × 1", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.

3x3x1 White Corrugated Mailers ECT-32-B, Bundle of 50. Use this item for shipments or presentation packs where the product fits the listed inside dimensions and closure style. Listed specs include size 3 x 3 x 1 in; material corrugated; sold as Bundle of 50. Confirm SKU, pack count, price, availability, and checkout delivery before ordering.

Frequently bought with

Common questions

What is the ECT rating and why does it matter for my operation?
ECT-32-B provides 32 pounds per inch of edge crush strength, ensuring mailers resist crushing during conveyor systems and stacking up to 4, 5 boxes high. This rating is ideal for single-item shipments and protects your product reputation while reducing damage-related chargebacks.
Do these mailers require tape, glue, or staples?
No, the one-piece fold-and-tuck design self-closes securely without adhesives or fasteners. This eliminates assembly time, reduces supply chain complexity, and lowers per-unit packaging costs.
How many mailers fit on a standard pallet and what's my dimensional weight impact?
Approximately 10,000, 12,000 flat mailers per pallet. At 331", these mailers minimize dimensional weight surcharges on parcel carriers, directly improving your last-mile margin on lightweight shipments.
Are these mailers suitable for fragile items and what protection do they offer?
Yes, the double-wall corrugated construction on the front and sides provides crush resistance ideal for fragile, lightweight items like jewelry, electronics, and cosmetics. Combine with appropriate void fill for optimal protection during transit.

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.

+1 (302) 216-2975 support@packrift.com Mon–Fri, Eastern Corrugated buying guide →