9x12 Self-Seal Reinforced Ship-Lite Mailers 100/Case
$54.76
/ case of 100$0.55 per mailer
Request bulk pricing
| Quantity (case) | Item-subtotal discount |
|---|---|
| 1–2 | Base item price |
| 3–5 | 3% off qualifying item subtotal |
| 6+ | 5% off qualifying item subtotal |
In stock · ships within 1 business day from the nearest of 5 US warehouses (IL, PA, TX, GA, CA) · 1–5 business days in transit · freight calculated at checkout · free ground shipping on orders over $99 (parcel rates up to $29.95) and over $500 (up to $120)
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 |
| Physical units per order increment | 1 |
| Case weight | 4.4 lb |
| Outer carton (shipping) | 13.25 × 10.25 × 4.5 in |
| LTL freight class | Class 78 |
| GTIN | 50047614536100 |
| 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 built 6 times stronger than standard paper envelopes. Made from 26 lb. reinforced paper with mesh poly fibers for maximum durability and moisture resistance. Bulk case of 100 delivers consistent shipping protection and cost-efficiency for high-volume operations.
This listing is one specification only: 9x12" Reinforced Ship-Lite Self-Seal Mailers, 6X Stronger, Case of 100. Packrift publishes no color options for this product; it is one product, not a white color range.
Compare nearby options
Larger, smaller and stronger options from the same family. Prices shown are current case prices; freight is calculated at checkout.
Larger size
10x13 Self-Seal Reinforced Ship-Lite Mailers 100/Case
$59.36
Smaller size
8.88x11.25 Ecojacket Flex All Paper Curbside Recyclable Mailers
$49.96
Stronger option
9x12 2.5 Mil Clear Self-Seal Poly Mailers 100/Case
$23.19
Same size, different spec
9x12 2.5 Mil Self-Seal Poly Mailers 100-Pack
$21.59
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.