5.5x3.5x3.5 ECT-32 White Corrugated Mailers - Crush Resistant, Bundle of 50
$32.66
/ bundle of 50$0.65 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 1/2" × 3.5" × 3 1/2"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 5 1/2" × 3.5" × 3 1/2" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 7.76 lb |
| Outer carton (shipping) | 18.5 × 13.25 × 5.75 in |
| LTL freight class | Class 125 |
| GTIN | 812578008032 |
| SKU | MSOL |
About this item
SKU MSOL — 5 1/2" × 3.5" × 3 1/2", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.
The 5.5x3.5x3.5 ECT-32 White Corrugated Mailers - Crush Resistant is a corrugated mailer for books, catalogs, apparel, subscription kits, samples, documents, and small e-commerce orders. Listed specs include inside dimensions 5.5" x 3.5" x 3.5"; white material; ECT-32; 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 does ECT-32-B mean, and how does it impact my shipping costs?
ECT (Edge Crush Test) -32-B indicates 32 pounds per inch of edge crush strength, meeting FEFCO standard for lightweight corrugated. This rating provides adequate stacking performance for 6-8 pallet heights while keeping mailers lightweight, reducing dimensional weight charges by 12-18% versus thicker alternatives on carriers like FedEx and UPS.
How much labor time do these fold-and-tuck mailers save compared to tape-sealed boxes?
Operators can assemble and close these mailers in 8-12 seconds per unit with zero tape or adhesive, versus 25-35 seconds for traditional boxes. For a 1,000-unit daily volume, this saves approximately 4-5 labor hours per day, translating to $200-300 daily labor cost reduction at standard warehouse wages.
Are these mailers suitable for heavier items or fragile goods?
These mailers are optimized for items under 3 pounds. The double-wall corrugated construction on front and sides provides excellent crush protection for fragile items like electronics, cosmetics, and collectibles. For items over 3 pounds or high-impact shipping, consider ECT-44-B or rigid-wall alternatives.
Can I order custom prints or branding on these mailers?
Standard 50-unit bundles ship in plain white. Custom printing with logos, return addresses, or promotional messaging is available on orders of 250+ bundles with 2-3 week lead times. Contact our B2B sales team for custom quote and minimum order requirements.
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.