Top Flight #10 Security Strip & Seal Envelopes, 24lb, 4 1/8"x9 1/2" 500-count

Top Flight #10 Security Strip & Seal Envelopes deliver professional correspondence with built-in protection. Each box contains 500 envelopes featuring a security strip that conceals contents from prying eyes—ideal for sensitive documents, invoices, and confidential mailings. The convenient self-sealing strip eliminates the need for moistening, saving time and effort. Constructed from sturdy 24lb paper stock, these standard #10 envelopes (4 1/8" x 9 1/2") maintain their shape and integrity through handling and shipping. Perfect for businesses, offices, and anyone who values secure, efficient mail management.