Industrial buyers, mailrooms, and office administrators who need reliable, professional mailing solutions for documents, invoices, and correspondence. These 9 1/2 x 12 1/2" kraft gummed envelopes deliver secure sealing and cost-effective bulk packaging with 500 envelopes per case, ideal for high-volume shipping operations requiring compliance-ready mailers.
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How to Choose the Right Packaging
Specs at a Glance
| Material | 28 lb. Kraft Paper Stock |
| Dimensions | 9 1/2" x 12 1/2" |
| Color | Kraft (Natural Brown) |
| Quantity Per Case | 500 Envelopes |
| Recyclable | Yes |
Common Use Cases
- Invoice and billing statement distribution Legal document and contract mailing Confidential correspondence and business communications Bulk mailroom operations and high-volume shipping E-commerce return and fulfillment packaging
What You'll Receive
- 500 kraft gummed envelopes per case Pre-gummed, ready-to-seal flaps
Shipping & Packaging
Frequently Bought Together
Bundle & Save 5%Frequently Asked Questions
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.
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.
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.
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.
Technical Specifications
| Material | 28 lb. Kraft Paper Stock |
| Dimensions | 9 1/2" x 12 1/2" |
| Color | Kraft (Natural Brown) |
| Quantity Per Case | 500 Envelopes |
| Recyclable | Yes |
| Color | Kraft |
| Strength / Material | 28 lb. Paper Stock |
| Dimensions (Internal) | 9 1/2"" × 12 1/2"" (L × W × H) |
Product Downloads
Shipping Information
Outer Carton Dimensions
15.25" × 13.75" × 11.0" (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
Product Support
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Buyer guides
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