12.5x12.5x1 White Corrugated Mailers 50-Pack M12121
$54.51
/ bundle of 50$1.09 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
12 1/2" × 12 1/2" × 1"
Board / material
ECT-32-B Corrugated
Color
White
Freight class
Class 125
Specifications
| Inside dimensions | 12 1/2" × 12 1/2" × 1" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | White |
| Sold as | Bundle of 50 |
| Order in multiples of | 50 |
| Bundle weight | 14.48 lb |
| Outer carton (shipping) | 27.75 × 19.0 × 5.75 in |
| LTL freight class | Class 125 |
| SKU | M12121 |
About this item
SKU M12121 — 12 1/2" × 12 1/2" × 1", ECT-32-B Corrugated, White. Sold as a bundle of 50, shipped from US warehouses.
12.5x12.5x1" white corrugated mailers in corrugated board, packed 50 per pack (SKU M12121); 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 pack of 50.
Common questions
How do I use the multi-depth scoring?
Place your product in the center, then fold the sides up to your desired depth (1/2", ", or 1") based on item thickness. The pre-scored lines make folding intuitive. Once folded, seal with tape for a secure, professional package.
Will this mailer protect delicate items during shipping?
Yes. The ECT-32-B corrugated material provides crush-resistant and puncture-resistant protection ideal for framed pictures, artwork, and other flat fragile items. The rigid construction minimizes in-transit movement and impact damage.
What makes this better than a standard flat mailer?
The easy-fold design accommodates items up to 1" thick without excess void space, reducing dimensional weight charges on shipments. The white corrugated exterior enhances professional presentation compared to kraft options, making it ideal for branded e-commerce deliveries.
Are these mailers recyclable?
Yes, the white corrugated construction is 100% recyclable and made from sustainably sourced materials, supporting your brand's environmental commitments and customer expectations for eco-friendly packaging.
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.