17 x 21" White Stayflats® Mailers
- Manufactured from white chipboard.
- Lightweight to save on postage.
- No additional stiffeners needed.
- Tab lock closure.
Stock Number | Pricing |
|---|---|
| Stock NumberRM7W | Pricing |

Outside Dimensions W x L: 17 x 21"
Thickness: .028
Quantity Per Case: 100
Order in Multiples of: 1
Freight Class: 60
Weight: 65.78 EA
NMFC Code: 20475-11
Ships Parcel: Yes
White Stayflats® Mailers deliver a rigid flat-shipping envelope without requiring separate stiffeners or backing boards. White chipboard construction provides inherent bend resistance, while the tab lock closure secures contents without tape — reducing steps in high-volume packing lines.
These mailers suit e-commerce fulfillment, print shops, photo labs, galleries, and direct mail operations. Typical contents include photographs, art prints, certificates, presentation materials, architectural drawings, and legal documents — any flat item where bend and crease protection is critical during transit.
Each mailer measures 17 x 21 inches and is parcel-friendly. The lightweight chipboard construction helps keep per-shipment postage costs manageable. Cases contain 100 mailers.
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