9.5x12.5" Kraft Gummed Envelopes 28lb - Secure Seal, Case of 500
$126.42
/ case of 500$0.25 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 1/2" × 12 1/2"
Board / material
28 lb. Paper Stock
Color
Kraft
Freight class
Class 78
Specifications
| Inside dimensions | 9 1/2" × 12 1/2" (L × W) |
|---|---|
| Board / material | 28 lb. Paper Stock |
| Color | Kraft |
| Sold as | Case of 500 |
| Order in multiples of | 1 |
| Case weight | 23.6 lb |
| Outer carton (shipping) | 15.25 × 13.75 × 11.0 in |
| LTL freight class | Class 78 |
| GTIN | 85227415653 |
| SKU | EN1035 |
About this item
SKU EN1035 — 9 1/2" × 12 1/2", 28 lb. Paper Stock, Kraft. Sold as a case of 500, shipped from US warehouses.
The 9.5x12.5" Kraft Gummed Envelopes 28lb - Secure Seal is a shipping mailer for documents, catalogs, apparel, small parts, photos, and lightweight e-commerce orders. Listed specs include size 9.5" x 12.5"; kraft material; 28lb; case of 500. Use it as a mailing envelope, poly mailer, padded mailer, or flat document shipper when the item fits the listed size.
Common questions
Are these envelopes water-resistant?
While the 28 lb. kraft paper is durable and opaque, these envelopes are not specifically treated for water resistance. For moisture-sensitive documents, we recommend using padded or poly-lined alternatives. The gummed seal provides security but not waterproofing.
Can these envelopes be used for USPS, UPS, and FedEx shipping?
Yes. The 9 1/2 x 12 1/2" size and kraft construction comply with major carrier specifications for standard mailings and lightweight packages. Always verify current carrier dimensional weight pricing and any specific requirements for your shipping method.
How do I activate the gummed seal?
Simply moisten the gummed flap with a sponge, wet cloth, or envelope moistener, then press to seal. The heavily gummed design ensures a strong, permanent bond ideal for high-security document mailing.
What is the cost advantage of buying by the case?
Purchasing 500-envelope cases significantly reduces per-unit cost compared to smaller quantities, making bulk ordering ideal for industrial and commercial mailroom operations. This case size also minimizes reordering frequency and storage complexity.
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.