Quality Park #8-5/8 Double Window Redi-Seal Security-Tinted Envelopes are professional business envelopes designed for mailing statements, invoices, and checks. Each envelope features two windows that simultaneously display both the sender and recipient addresses, eliminating the need to manually address envelopes.

These envelopes use Redi-Seal self-sealing technology — simply lift the bottom flap and press it to the top flap for an instant, secure closure without licking. A reflex blue security tint pattern lines the interior, obscuring the contents even when held up to light to protect sensitive financial or personal information.

Measuring 3-5/8 x 8-5/8 inches with a commercial flap and side seams, these 24 lb white wove envelopes have a clean, professional appearance. The top window measures 7/8 x 3-1/2 inches (positioned 5/8 in from left, 2-1/4 in from bottom) and the bottom window measures 1 x 4 inches (positioned 5/8 in from left, 5/8 in from bottom). Each box contains 500 envelopes.