Commercial mailings benefit from the appropriate envelope. By using a double window envelope you can include the addresses for the sender and recipient without any additional printing. Both show through the clear windows from the letterhead within. The #10 Double Window Envelope is made from 24 lb white wove material with a blue woodgrain tint inside to provide security so it is not possible to see through the envelope to read its contents. When sending mailings, it is best to use a paper weight one step above the paper enclosed. The 24 lb paper is a good option for bills and general mailings that use 20 lb or even 24 lb paper. The envelopes have a remoistening seal and are sold in 500-count boxes with volume savings for orders of more than one box.

4-1/8" x 9-1/2" (4.125" x 9.5"), Double Window Envelope, Top Window 1-1/8" x 3-1/2" Window, 1/2" From Left, 2-1/4" From Bottom; Bottom Window 1-1/8" x 4" Window, 1/2" From Left, 1/2" From Bottom, White Wove Paper, Remoistening Seal, Blue Woodgrain Tint, 500 Qty / Box.