Western Sulphite® Open Side Booklet Digi-Clear Window with Confetti Tint - These SFI certified booklet window envelopes are manufactured using two side seams under construction, a Digi-Clear window, Black Confetti Tint and a traditional remoistening seal. Open Side Booklets have their opening on the long dimension - offering inserting ease and convenience. Note: This envelope is laser and toner based compatible.White Sulphite (SFI CERTIFIED) 92% Brightness Smooth Finish Black Confetti Tint Two Side Seams Under Digi-Clear Window Laser CompatibleRemoistening SealFlap DownWindow #1 (1 1/8 x 4 1/2, 7/8L - 1/2B)