9x12 Poly Mailers - Self-Seal, 100-Pack
$19.10
/ case of 100$0.19 per mailer
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Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
9" × 12"
Board / material
2.5 Mil Polyethylene
Color
White
Freight class
Class 60
Specifications
| Inside dimensions | 9" × 12" (L × W) |
|---|---|
| Board / material | 2.5 Mil Polyethylene |
| Color | White |
| Sold as | Case of 100 |
| Order in multiples of | 1 |
| Case weight | 2.36 lb |
| Outer carton (shipping) | 11.25 × 8.75 × 2.5 in |
| LTL freight class | Class 60 |
| GTIN | 841436058988 |
| SKU | B873100PK |
About this item
SKU B873100PK — 9" × 12", 2.5 Mil Polyethylene, White. Sold as a case of 100, shipped from US warehouses.
The 9x12" 2.5 Mil Self-Seal Poly Mailers - Puncture Resistant is a shipping mailer for documents, catalogs, apparel, small parts, photos, and lightweight e-commerce orders. Listed specs include size 9" x 12"; poly material; 2.5 Mil; 100 Pack. Use it as a mailing envelope, poly mailer, padded mailer, or flat document shipper when the item fits the listed size.
Poly mailers: Good fit for shipping clothing, apparel, accessories, documents, returns, and other lightweight non-fragile ecommerce orders. These mailers help ecommerce teams and small businesses choose protective, right-sized packaging for common fulfillment workflows.
Common questions
Will these mailers hold up to rough shipping and handling?
Yes. The 2.5 mil polyethylene construction combined with high-strength seams provides puncture, tear, and tamper resistance. Even when overpacked, the reinforced seams keep contents secure throughout the shipping journey.
Can I print my brand logo and labels on these mailers?
Absolutely. The smooth white exterior surface accepts labels, stamps, and ink adhesion without degradation, allowing you to customize each mailer with your branding for a professional unboxing experience.
How does the tear strip closure work and is it reusable?
The self-seal tear strip provides one-time opening through a convenient perforated line. Once opened by the recipient, the seal cannot be reused, making it ideal for tamper-evident shipping where you want to ensure product authenticity.
Are these mailers waterproof and suitable for moisture-prone environments?
Yes. The polyethylene construction provides water and moisture resistance, protecting your products during transit through various weather conditions and humid storage environments.
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.