9x12 Self-Seal Reinforced Ship-Lite Mailers 100/Case SLF0912WH
$54.76
/ case of 100$0.55 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
26 lb. Reinforced Paper
Color
White
Freight class
Class 78
Specifications
| Inside dimensions | 9" × 12" (L × W) |
|---|---|
| Board / material | 26 lb. Reinforced Paper |
| Color | White |
| Sold as | Case of 100 |
| Order in multiples of | 1 |
| Case weight | 4.4 lb |
| Outer carton (shipping) | 13.25 × 10.25 × 4.5 in |
| LTL freight class | Class 78 |
| SKU | SLF0912WH |
About this item
SKU SLF0912WH — 9" × 12", 26 lb. Reinforced Paper, White. Sold as a case of 100, shipped from US warehouses.
9x12" self-seal mailers in paper stock, packed 100 per case (SKU SLF0912WH); this is a second listing of the same BOX case stock at the same price.
Sized for shipping and fulfillment work; the self-seal closure needs no tape. Order by the case of 100.
Common questions
How much stronger are Ship-Lite® envelopes compared to standard paper envelopes?
Ship-Lite® envelopes are six times stronger than traditional paper envelopes due to their reinforced 26 lb. paper construction combined with embedded mesh screen poly fibers. This durability significantly reduces damage during handling, transit, and sorting while maintaining lightweight profiles for cost-effective shipping.
Are these envelopes compliant with major shipping carriers?
Yes. These self-seal Ship-Lite® envelopes meet USPS, UPS, and FedEx shipping requirements and standards. The moisture-resistant construction and secure self-adhesive closure ensure your shipments comply with carrier handling protocols and maintain package integrity throughout transit.
What makes the self-seal closure better than tape?
The self-seal closure (press-and-seal) eliminates the need for tape, reducing packaging time and labor costs. It creates a uniform, professional seal that's immediately recognizable as secure, faster to apply, and provides consistent sealing performance without tape residue or application inconsistencies.
Are these envelopes moisture-resistant?
Yes. The reinforced paper construction with poly fiber mesh provides moisture resistance, protecting contents from humidity, water exposure, and environmental moisture during storage and shipping. This is especially valuable for sensitive documents, electronics, and products requiring climate protection.
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.