W-2 Gummed Seal Double-Window Envelopes, Commercial Flap, Gummed Closure, 5.63 x 9, White, 24/Pack Designed specifically for two-up style W-2 forms to provide a precise fit. Left-aligned double-window design. Interior security pattern and blue tinting. Business-weight paper with a woven finish. Cost-effective gummed closure. Preprinted face: "Important Tax Return Document Enclosed".