9.5x12.5" White Chipboard Stayflats Express Mailers - Self-Seal, Case of 250
$124.42
/ case of 250$0.50 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
9 1/2" × 12.5"
Board / material
.012 Chipboard
Color
White
Freight class
Class 60
Specifications
| Inside dimensions | 9 1/2" × 12.5" (L × W) |
|---|---|
| Board / material | .012 Chipboard |
| Color | White |
| Sold as | Case of 250 |
| Order in multiples of | 250 |
| Case weight | 25.0 lb |
| Outer carton (shipping) | 13.25 × 12.0 × 11.75 in |
| LTL freight class | Class 60 |
| GTIN | 841436077316 |
| SKU | RM1EP |
About this item
SKU RM1EP — 9 1/2" × 12.5", .012 Chipboard, White. Sold as a case of 250, shipped from US warehouses.
The 9.5x12.5" White Chipboard Stayflats Express Mailers - Self-Seal is a rigid chipboard mailer for photos, prints, documents, calendars, certificates, and flat items that should not ship in a soft envelope. Listed specs include size 9.5" x 12.5"; white material; case of 250. Use it as a mailing envelope, poly mailer, padded mailer, or flat document shipper when the item fits the listed size.
Common questions
Do I need tape or additional adhesive to seal these mailers?
No. The integrated peel-and-seal closure provides a complete, tamper-evident seal without tape, glue, or stiffeners. Simply peel back the strip and press to seal, use for fast-paced fulfillment operations.
Will these mailers work with standard postage and shipping carrier automation?
Yes. These mailers are designed to meet USPS, UPS, and FedEx specifications for flat mail processing. The.012 chipboard construction provides the rigidity needed for automated sorting without additional preparation.
How much postage can I save compared to padded alternatives?
The lightweight chipboard construction weighs significantly less than padded or bubble-lined mailers, reducing dimensional weight charges. For high-volume shippers, the cumulative postage savings translate to substantial quarterly cost reductions.
Can I load documents from the side like a traditional envelope?
Yes. The side-loading design allows you to insert and retrieve documents without tilting or forcing items through a top opening. This speeds up packing, reduces product damage, and improves the unboxing experience for recipients.
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.