91500 Check Envelopes Double Window Size: 8 5/8 x 3 5/8″These double window business envelopes never need addressing!DU-O-VUE envelope design saves hours of addressing – just stuff, seal & send! Recipient’s address & your preprinted return address show through clearly. Top Window: 3 3/4 x 1″ Window alignment: 3/8″ from left  2 1/4″ from bottom Bottom Window: 4 x 1″ Window alignment: 5/8″ from left 9/16″ from bottom Crisp, 24# bright white wove paper stock immediately conveys a professional image. Tinted inside pattern keeps confidential information from showing through. Gummed flap seals securely when moistened. Quality construction stands up in the mail. 250 Per Box