5x5x3 Corrugated Mailers - ECT-32 White Crush Resistant, 50-Pack
$26.77
/ bundle of 50$0.54 per mailer
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Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
5" × 5" × 3"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 5" × 5" × 3" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 7.6 lb |
| Outer carton (shipping) | 20.0 × 15.5 × 5.75 in |
| LTL freight class | Class 125 |
| GTIN | 812578008018 |
| SKU | M553 |
About this item
SKU M553 — 5" × 5" × 3", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.
The 5x5x3 White 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 3"; white 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 is ECT-32-B and how does it compare to other corrugated grades?
ECT-32 refers to Edge Crush Test rating of 32 lbs/inch, the industry standard for small parcel mailers. ECT-32-B white corrugated provides optimal balance of crush strength, light weight, and cost efficiency for B2B shipping volumes, reducing both product damage and dimensional weight surcharges.
How much labor does the fold-and-tuck design save versus traditional taped boxes?
One-piece design eliminates taping, gluing, and stapling steps. Fulfillment teams report 3-5 seconds per box assembly time, with zero adhesive or fastener materials required. On high-volume operations (10,000+ boxes/month), this translates to measurable labor cost and supply overhead reduction.
Can these mailers handle stacking in a warehouse environment?
Yes. The double-wall front and side protection provides crush resistance suitable for multi-level pallet stacking. ECT-32-B rating supports consistent stack integrity up to industry-standard pallet heights without compression or deformation of shipped contents.
Are these boxes compatible with automated packing equipment?
One-piece fold-and-tuck design is semi-manual friendly. For high-speed automation, verify equipment compatibility with your provider. The compact, consistent 5x5x3" footprint integrates well with standard conveyor systems and dimensional scaling equipment used in modern fulfillment centers.
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.