11x13.5" Kraft Self-Seal Stayflats Plus Mailers - 100 Case
$65.52
/ case of 100$0.66 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
11" × 13 1/2"
Board / material
.028 Chipboard
Color
Kraft
Freight class
Class 60
Specifications
| Inside dimensions | 11" × 13 1/2" (L × W) |
|---|---|
| Board / material | .028 Chipboard |
| Color | Kraft |
| Sold as | Case of 100 |
| Order in multiples of | 100 |
| Case weight | 23.72 lb |
| Outer carton (shipping) | 16.5 × 11.5 × 10.0 in |
| LTL freight class | Class 60 |
| GTIN | 841436023757 |
| SKU | RM3K |
About this item
SKU RM3K — 11" × 13 1/2", .028 Chipboard, Kraft. Sold as a case of 100, shipped from US warehouses.
Heavy-duty 11x13.5 " kraft self-seal Stayflats Plus® mailers deliver professional protection for e-commerce shipments without added stiffeners. Pre-scored.028 chipboard with peel-and-seal closure stays flat and resists puncture. Case of 100 reduces postage costs while maintaining brand presentation.
This listing is one specification only: 11x13.5" Kraft Self-Seal Stayflats Plus Mailers, 100 Case. The color is kraft only; it is not sold in white or any other color under this SKU.
Common questions
Do these mailers require tape, glue, or a sealing machine?
No. The peel-and-seal closure is built-in and ready to use. Simply peel the release strip and press to seal, no additional equipment, tape, or adhesives needed. This saves time in fulfillment and reduces labor costs.
Will these mailers protect documents and photos from bending or creasing?
Yes. The.028 kraft chipboard provides puncture and bend resistance, while the rigid construction prevents warping during transit. Products arrive in professional condition, reducing damage-related returns and customer complaints.
How much do these mailers weigh per unit, and will they increase postage costs?
These lightweight mailers weigh approximately 0.3 oz each, minimizing dimensional weight charges. Unlike bubble mailers or padded envelopes, you save on postage without sacrificing protection, ideal for high-volume shippers seeking margin improvement.
Are these mailers eco-friendly?
Yes. Kraft chipboard is 100% recyclable and made from sustainable materials, aligning with environmentally conscious brand values and reducing your carbon footprint per shipment.
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.