OEM Quality Park No. 8-5/8 double-window envelopes, sold in a box of 500. These envelopes feature full-size, gummed flaps designed for standard 3-1/2" x 8-1/2" checks, making them ideal for payroll and accounts payable applications. The top window measures 7/8" x 3-1/2" and is positioned 5/8" from the left and 2-1/4" from the bottom, while the bottom window measures 1" x 4" and is positioned 5/8" from the left and 5/8" from the bottom. Made of 24 lb. white wove stock, these envelopes include poly windows and inside tint for added security.