5x5x1 ECT-32 White Corrugated Mailers 50/Bundle M551
$45.57
/ bundle of 50$0.91 per mailer
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
5" × 5" × 1"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 5" × 5" × 1" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 5.1 lb |
| Outer carton (shipping) | 16.0 × 14.0 × 5.75 in |
| LTL freight class | Class 125 |
| SKU | M551 |
About this item
SKU M551 — 5" × 5" × 1", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.
5x5x1" white corrugated mailers in ECT-32 corrugated board, packed 50 per bundle (SKU M551); 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 ECT rating does this mailer have and why does it matter?
ECT-32-B corrugated provides 32 PSI edge crush test rating, sufficient for small, lightweight parcels under 5 lbs. This rating ensures crush resistance during stacking in warehouses and handling in automated sort facilities without excessive material cost.
Do I need tape, staples, or glue to seal these mailers?
No. The one-piece fold-and-tuck design seals automatically when folded, eliminating tape, glue, and staple expenses while reducing packing time by up to 45 seconds per unit at scale.
How many mailers fit on a standard pallet and what's the dimensional weight impact?
A standard pallet holds 2,000, 2,500 units (40, 50 bundles). At 5x5x1 inches, each mailer measures 25 cubic inches; 50 units = 1,250 cubic inches, meeting DIM weight thresholds for standard parcel carriers and avoiding surcharges.
Are these mailers suitable for fragile items like cosmetics or electronics?
Yes. Double-wall construction on the front and sides provides crush resistance for fragile goods. The compact 1-inch depth is ideal for thin, breakable items (jewelry, phone cases, glass bottles) while staying within carrier weight limits.
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.