9.75x12.25" Kraft Self-Seal Stayflats Plus Mailers - 100/Case
$54.60
/ case of 100$0.55 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 3/4" × 12 1/4"
Board / material
.028 Chipboard
Color
Kraft
Freight class
Class 60
Specifications
| Inside dimensions | 9 3/4" × 12 1/4" (L × W) |
|---|---|
| Board / material | .028 Chipboard |
| Color | Kraft |
| Sold as | Case of 100 |
| Order in multiples of | 100 |
| Case weight | 19.7 lb |
| Outer carton (shipping) | 15.5 × 10.0 × 9.75 in |
| LTL freight class | Class 60 |
| GTIN | 841436023740 |
| SKU | RM5K |
About this item
SKU RM5K — 9 3/4" × 12 1/4", .028 Chipboard, Kraft. Sold as a case of 100, shipped from US warehouses.
The 9.75x12.25" Kraft Self-Seal Stayflats Plus Mailers is a shipping mailer for documents, catalogs, apparel, small parts, photos, and lightweight e-commerce orders. Listed specs include size 9.75" x 12.25"; kraft material; 100 per case. Use it as a mailing envelope, poly mailer, padded mailer, or flat document shipper when the item fits the listed size.
Common questions
Do these mailers require additional stiffeners or inserts?
No. The.028 kraft chipboard provides inherent rigidity and puncture resistance, eliminating the need for additional stiffeners. This reduces packaging costs and assembly time while protecting contents during transit.
How does the self-seal closure work and is it reliable?
The peel-and-seal adhesive is pre-applied and pressure-activated, simply peel back the backing strip and press to seal. The closure is tamper-evident and provides consistent, secure sealing comparable to tape, with a convenient pull-tab tear strip for recipient opening.
What weight items can these mailers protect?
Designed for flat goods up to approximately 2-3 lbs (documents, photos, thin merchandise). The rigid chipboard protects against crushing and bending; for heavier items, consider larger or corrugated options.
How do these mailers impact shipping costs?
The lightweight.028 chipboard minimizes dimensional weight charges compared to corrugated boxes. Bulk case pricing ($X per unit at volume) plus postage savings make these cost-effective for high-volume e-commerce shippers.
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.