Splendoress #10 Self-Seal Windowless Envelopes — 500 ct, 24 lb, Security-Tint

These are Splendoress #10 self-seal, windowless letter envelopes—500 per box, 24 lb paper with inside security tint and peel-and-stick closure for fast, private mailing.

Whether you're sending invoices, contracts, or everyday business letters, these standard #10 envelopes are built for efficient mailing and confidentiality. The peel-and-seal flap speeds up envelope assembly, while the tinted interior pattern helps protect sensitive contents from prying eyes. Each box contains 500 envelopes sized 4-1/8 x 9-1/2 inches, made from 24 lb paper for a substantial feel that works with printers and postage systems.

How do these envelopes simplify daily mailing tasks?

Peel-and-stick closures remove the need for moistening or separate adhesive, letting you prepare batches quickly. The consistent size and weight are compatible with most folding patterns and mailing machines, saving time in office routines.

• Peel-off liner for fast, secure sealing
• 500-count bulk box to reduce reorders
• 24 lb paper that feeds smoothly through printers
• Standard #10 dimensions for postal compatibility

Will these envelopes keep contents private and professional?

Yes. A printed security pattern on the inside prevents text or documents from showing through, and the plain, windowless exterior preserves a formal appearance for business correspondence. The paper weight also gives a quality, opaque finish that looks professional in hand and by mail.

• Tinted interior security pattern to conceal contents
• Windowless design for confidentiality
• Neutral white exterior suitable for invoices and letters
• Durable flap closure for secure transit

Are these compatible with printers, postage meters, and bulk mailing?

These envelopes are designed to work well with standard office printers and postage equipment. The 24 lb paper weight is substantial yet thin enough to run through automatic feeders, and the uniform dimensions make them suitable for metered postage or manual stamping.

• Consistent sizing for automated feeders and metering
• 24 lb stock balances durability and machine-friendliness
• Flat, untextured surface for clear printing and labeling
• Bulk packaging reduces handling downtime

How do these envelopes meet business compliance and supply needs?

Supplied in a 500-count box, they provide a long-lasting inventory for busy offices and mailrooms. The product includes NDAA Section 889 compliance certification, making it a suitable choice for organizations tracking regulatory requirements.

• Boxed 500-count supply minimizes frequent ordering
• NDAA Section 889 compliance certification included
• Uniform quality for predictable mailing results
• Cost-effective bulk pricing for operations of any size

Who is this for: Splendoress #10 Self-Seal Letter Envelopes are ideal for small businesses, accounting and legal offices, non-profit mailings, and busy home offices that send invoices, contracts, or confidential documents. If you need an economical, printer-friendly, and secure envelope option in large quantities, this 500-pack delivers a practical balance of quality, convenience, and compliance.