Quality Park #9 Double Window Envelopes show the sender address and receiver address for billing invoices, business checks and other important statements. A special Redi-Seal closure doesn't require any moisture to seal. Simply press the bottom flap to the top flap and close. These security envelopes have a reflex blue pattern to protect sensitive information, even when envelopes are held up to light. These business envelopes are made of 24 lb white wove paper with side seams for a professional appearance. Available in boxes of 500 so you never run out! Envelope dimensions are 3 7/8 x 8 7/8 inches. Top window dimensions are 1 3/16 x 3 1/2 inches, 3/8 inches from the left and 2 inches from the bottom. Bottom window dimensions are 1 x 4 inches, 3/8 inch from the left and a 1/2 inch from the bottom.
- These boxes of 500 white #9 double window security envelopes (3 7/8 in x 8 7/8 in) protect your customers' sensitive data; a reflex blue pattern obscures the details of what's inside
- Redi-Seal self seal mailing envelopes require no moisture; the unique double flap design allows you to simply raise the lower flap and press to seal
- Double window envelopes show sender and receiver addresses; top window is 1 3/16" x 3 1/2"; 3/8" from the left; 2" from the bottom; bottom window is 1" x 4"; 3/8" from the left; 1/2" from the bottom
- #9 Mailing envelopes measure 3 7/8 in (height) x 8 7/8 in (width) and are made of 24 lb white wove paper with professional side seams; #9 envelopes fit into #10 envelopes
- Stock up on boxes of 500 machinable #9 envelopes for bulk mailings