Quality Park Redi-Seal #10 Business Envelopes (model QUA11118) are standard business-size white wove envelopes measuring 4 1/8" x 9 1/2", sold in a box of 500. These are regular (non-window) envelopes designed for everyday office correspondence and mailing needs.

Each envelope features Quality Park's Redi-Seal double-flap closure system, which uses a moisture-activated gum adhesive for a secure seal. The white wove finish provides a professional look suitable for business letters, invoices, statements, and general office mailings. The #10 size is the most common business envelope, compatible with standard letter-fold (tri-fold) 8.5" x 11" sheets.