6.5 x 3.5" Kraft Gummed Envelopes - Secure Seal, 28 lb, Case of 5000
$595.90
/ case of 5000$0.12 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
6 1/2" × 3.5"
Board / material
28 lb. Paper Stock
Color
Kraft
Freight class
Class 78
Specifications
| Inside dimensions | 6 1/2" × 3.5" (L × W) |
|---|---|
| Board / material | 28 lb. Paper Stock |
| Color | Kraft |
| Sold as | Case of 5000 |
| Order in multiples of | 1 |
| Case weight | 45.18 lb |
| Outer carton (shipping) | 19.25 × 14.0 × 13.5 in |
| LTL freight class | Class 78 |
| GTIN | 50085227507629 |
| SKU | EN1031 |
About this item
SKU EN1031 — 6 1/2" × 3.5", 28 lb. Paper Stock, Kraft. Sold as a case of 5000, shipped from US warehouses.
The 6.5 x 3.5" Kraft Gummed Envelopes - Secure Seal, 28 lb is a shipping mailer for documents, catalogs, apparel, small parts, photos, and lightweight e-commerce orders. Listed specs include size 6.5" x 3.5"; kraft material; 28 lb; case of 5000. Use it as a mailing envelope, poly mailer, padded mailer, or flat document shipper when the item fits the listed size.
Common questions
Do these envelopes require tape or additional sealing materials?
No. The heavy-duty gummed flap activates with moisture, providing a secure, tamper-evident seal without tape, staples, or additional fasteners. Simply moisten the gummed edge, fold, and seal, eliminating extra material costs and application time.
Are these envelopes suitable for mailing through USPS and commercial carriers?
Yes. These kraft gummed envelopes comply with standard postal regulations and carrier requirements for domestic and international mail. The opaque 28 lb. paper stock meets industry standards for weight-sensitive mailings and secure transport.
What makes 28 lb. kraft paper better than lighter alternatives?
The 28 lb. kraft specification provides durability, puncture resistance, and tear strength, protecting contents through handling and postal processing. Heavier stock reduces the risk of envelope failure, damaged contents, and costly reshipments, improving ROI for bulk orders.
Can we order custom quantities or minimum order requirements?
This product is sold as a case of 5,000 to optimize per-unit cost efficiency. For large-volume industrial users, bulk case pricing and customization options are available, contact our sales team for volume quotes and special procurement arrangements.
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.