Use for mailrooms, shipping departments, and offices that process high volumes of outgoing correspondence daily. These 9 1/2" x 12 1/2" self-seal envelopes simplify your mailing workflow by eliminating moisture-based sealing, reducing labor time while maintaining professional presentation standards for business communications.
Best For
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Specs at a Glance
| Material | 28 lb. Paper Stock |
| Dimensions | 9 1/2" W x 12 1/2" H |
| Color | White |
| Sealing Type | Peel & Seal (Self-Adhesive, No Moisture Required) |
| Recyclable | Yes |
Common Use Cases
- High-volume business correspondence and invoicing Direct mail marketing campaigns and promotional materials Shipping documents and order confirmations Confidential mailings requiring tamper-evident sealing Cross-company B2B documentation and contracts
What You'll Receive
- 500 peel-and-seal white envelopes (case) Protective tear-away adhesive strips on each envelope
Shipping & Packaging
Frequently Bought Together
Bundle & Save 5%Frequently Asked Questions
No. These self-seal envelopes feature a pre-applied adhesive strip protected by a tear-away backing. Simply peel off the tear strip and press the flap down for an instant, reliable seal without any moisture or additional materials needed.
The protective tear-away strip keeps the adhesive free from dust and environmental exposure, ensuring a longer shelf life compared to traditional gummed envelopes. When stored in normal office conditions, these envelopes maintain seal reliability for extended periods.
Yes. The 9 1/2" x 12 1/2" size and white 28 lb. paper stock meet standard USPS and international postal regulations, making them ideal for domestic and business class mailings without surcharges.
Self-seal envelopes reduce labor time by 40-50% since employees don't need moisture or special equipment to seal them. The 500-count case offers bulk pricing efficiency, and the extended adhesive shelf life eliminates waste from dried-out gummed inventory.
Technical Specifications
| Material | 28 lb. Paper Stock |
| Dimensions | 9 1/2" W x 12 1/2" H |
| Color | White |
| Sealing Type | Peel & Seal (Self-Adhesive, No Moisture Required) |
| Recyclable | Yes |
| Color | White |
| Strength / Material | 28 lb. Paper Stock |
| Dimensions (Internal) | 9 1/2"" × 12 1/2"" (L × W × H) |
Product Downloads
Shipping Information
Outer Carton Dimensions
14.25" × 13.0" × 10.5" (L × W × D)
Unit of Measure
CASE
Qty Per Shipping Unit
500 PER CASE
LTL Freight Class
Class 78
Carrier Eligibility
UPS Ground & Freight Eligible
TRUST & RELIABILITY
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