Business Source BSN04645 No 10 Security Envelope 500

Product Description

The BUSINESS SOURCE BSN04645 is a No 10 self-sealing security envelope designed for mailing invoices, statements, and confidential business documents. Built on 24 lb paper stock, each envelope features an interior security tint that blocks contents from view when held to light. The self-sealing closure uses a double-flap design: the lower flap is raised and pressed against the upper flap to create a secure bond without moisture or licking. The result is a fast, reliable seal that resists premature sticking during storage. Suitable for high-volume office and billing operations where speed and document privacy are priorities.

These envelopes are intended for standard No 10 business correspondence applications, including invoice mailing, remittance processing, and the distribution of documents that require confidentiality. The No 10 format accommodates standard 8.5-inch by 11-inch paper folded in thirds, making it the standard choice for billing departments, accounting firms, and general office use. Each box contains 500 envelopes, supporting sustained mailing runs without frequent restocking.

Key Features

• Inside security tint prevents contents from being read through the envelope
• Self-sealing double-flap closure requires no moisture or adhesive applicator
• Double-flap design prevents gum surfaces from sticking to each other during storage
• 24 lb paper stock provides adequate weight and durability for standard mail
• No 10 size fits standard tri-folded letter and invoice documents
• 500 envelopes per box for high-volume mailing needs

Compatibility

Designed as a standard No 10 business envelope suitable for use with typical desktop and commercial envelope printers and inserting equipment that accepts No 10 format stock.

Installation Notes

No tooling or special equipment is required to use these envelopes. Store boxes flat in a cool, dry environment to prevent the self-seal adhesive from activating prematurely. When sealing, raise the lower flap fully before pressing firmly against the upper flap for a complete bond. If running through an envelope printer, verify that the printer supports self-seal stock before processing.