Quality Park No. 10 Single Window Security Tinted with Reveal-N-Seal® Self-Seal Closure - Single Window - #10 - 4 1/8" Width x 9 1/2" Length - 24 lb - White - 500 / Box

No. 10 Single Window Security Tinted Envelopes with self-seal, Reveal-N-Seal closure is the ultimate mailing solution in convenience and security. Self-seal closure alleviates the need to moisten flaps and to throw away pull-off strips. Simply fold the bottom flap up and press for a secure seal. Window conveniently accommodates a printed address, eliminating handwritten addressing. Perforated lines along flap show evidence if tempering is attempted. 24 lb. bright-white stock adds a professional touch to your business mailings. Innovative design preserves the adhesive and extends shelf life until use. Send out your business correspondence with assurance of quality and security with these envelopes.