2022 Double Window Envelope for 3-UP 1099 Misc forms. This envelope accommodates continuous and laser 1099, 1098, and W-2G forms (except Form 1098C, 1099MISC, 1099INT, 1099R, 1099B, 1099K, and 1099DIV). 3-78" x 8-3/8", Color is White, 2 windows, Gummed envelopes. 300 envelopes per box