What are the size and material standards for a window envelope?
o Standard Window Envelopes are available with these window sizes: § The standard window is 1-1/8 inches (1.125″) high and 4-3/4 (4.75″) inches wide, and is placed 5/8 inch (0.625″) from the bottom edge of the envelope. § In size 6-3/4 envelopes, the window is 7/8 inch (0.875″) from the left edge. § In size 10 envelopes, the window is 1 inch (1″) from the left edge. § On double window envelopes, the second window (designed for return information) is 1/2 inch (0.5″) from the top and left edges, and measures 3/4 inch (0.75″) high and 2-1/2 (2.5″) inches wide. o Other window sizes and locations can be produced, if the window is: § Not more than 1-1/2 inches (1.5″) high § Not more than 5 inches (5″) wide § At least 1/2 inch (0.5″) from the bottom edge of the envelope§ At least 3/8 inch (0.375″) from any envelope edge. o Window cover material: § Must be made of a non-tinted clear or transparent material (e.g., cellophane or polystyrene). § Must permit information, as viewed through the wind
