Quality Park Redi-Seal No. 10 Window Envelopes - Single Window- Self-Sealing - Wove - White Description: No. 10 Redi-Seal Window Envelopes require no moisture. Raise the lower flap and press. Unique double-flap design keeps gum from sticking until mailing. 1-1/8 x 4-1/2 window is positioned 7/8 from left and 1/2 from bottom. Envelopes are made from 24 lb. white wove stock. Features: Single Window- 9 1/2 W x 4 1/8 L- 24 lb Self-sealing. Wove Color: White Country of origin: US Brand Name: Quality Park Model No: 2088-QUA21318