Quality Park Health Form Redi Seal Security Envelope #10 1/2 4 1/2 x 9 1/2 White 500/Box 21438

Sold as 500/Box. Envelopes are great for mailing letters and documents. Security tinted pattern helps to discourage reading sensitive information through the outside of the envelope. The flap is on the long side for easier filling. Made from 24 lbs. white paper for durability. Convenient box of 500 envelopes ensures ample supply. Made in the USA. These envelopes measure 4 1/2" x 9 1/2" in size, providing enough space for your mail. Simply position the address to show through the single-right window. Redi-Seal closure with commercial flap seals securely without moistening. Window measures 4.5" x 1"; 4.25" from the left edge and 1.56" from the bottom.