Ensure immediate attention. Double-window envelopes come preprinted with the statement Important Tax Return Document Enclosed. Use this envelope with any 3-up 1099, 1098 or 5498 form The security tint and cellophane windows ensure the privacy of the information. Envelope Size: 3 7/8 x 8 3/8 Top Window Size: 7/8 x 3 3/8 Top Window From Left Side: 1/2 Top Window From Bottom: 2 3/16 Bottom Window Size: 1 1/16 x 3 3/8 Bottom Window From Left Side: 1/2 Bottom Window From Bottom: 11/16 Crisp, white 24 lb wove stock enhances your professional image Black confetti security tint ensures privacy Gummed flap seals securely when moistened. Also known as item DW19W Ships direct from the plant ion 48 hours or less Pricing is for 25 envelopes