9x12" Kraft Gummed Envelopes 28lb Paper - Secure Seal, Case of 1000
$204.93
/ case of 1000$0.20 per mailer
Request bulk pricing
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
28 lb. Paper Stock
Color
Kraft
Freight class
Class 78
Specifications
| Inside dimensions | 9" × 12" (L × W) |
|---|---|
| Board / material | 28 lb. Paper Stock |
| Color | Kraft |
| Sold as | Case of 1000 |
| Order in multiples of | 1 |
| Case weight | 39.78 lb |
| Outer carton (shipping) | 19.25 × 15.25 × 12.75 in |
| LTL freight class | Class 78 |
| GTIN | 50085227414651 |
| SKU | EN1022 |
About this item
SKU EN1022 — 9" × 12", 28 lb. Paper Stock, Kraft. Sold as a case of 1000, shipped from US warehouses.
Heavy gummed flaps deliver a permanent, tamper-evident seal on 28 lb. paper stock. Order by the case (1,000 units) for maximum cost savings.
Common questions
Are these envelopes compliant with USPS and shipping regulations?
Yes. The 9 x 12" size meets USPS standards for First Class and Priority Mail, while the gummed closure provides secure, tamper-evident sealing required for certified and insured mailings.
What weight paper stock is recommended for mailing documents?
Our 28 lb. kraft paper stock is ideal for standard document mailing. It provides excellent durability during transit while remaining cost-effective for bulk mailings without exceeding weight restrictions.
How do gummed envelopes compare to self-seal envelopes for security?
Gummed envelopes provide tamper evidence and a more professional appearance. The adhesive seal creates a visible break if opened, making them preferred for confidential documents, legal papers, and compliance-sensitive mailings.
Can bulk quantities be customized or printed with company branding?
Yes. Contact our sales team for custom printing options and volume discounts on cases of 1,000 or larger. Minimum order quantities apply for branded envelopes.
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.