Specifications include, but are not limited to: 1. 1,000 BOX NAICS 424120 Matl Code 8733656 BX ENVELOPE, WHITE, #10 WITH POLY-KLEAR-COVERED WINDOW, WITHOUT INDICIA, TOP FLAP WITH VERTICAL SEAMS, 4-1/8 INCHES HIGH (H) BY 9-1/2 INCHES WIDE (W), WINDOW SIZE: 2-1/8 INCHES H BY 5-3/16 INCHES W, WINDOW POSITION: 7/16 INCHES FROM LEFT, ONE INCH FROM BOTTOM, 2,000/BOX. 2. 6,000 BOX NAICS 424120 Matl Code 8733657 BX ENVELOPE, WHITE, INSERT WITH OPEN WINDOW RETURN FOR REMITTANCE, OPEN SIDE DIAGONAL SEAM, 3-3/4 INCHES H BY 8-3/4 INCHES W, WINDOW SIZE: ONE INCH H BY 3-3/4 INCHES W, WINDOW POSITION: 4-1/4 INCHES FROM LEFT, 13/16 INCH FROM BOTTOM, 2,000/BOX. 3. 9,000 BOX NAICS 424120 Matl Code 8733661 BX ENVELOPE, WHITE, #10 WITH POLY-KLEAR-COVERED WINDOW, WITH INDICIA, TOP FLAP WITH VERTICAL SEAMS, 4-1/8 INCHES HIGH (H) BY 9-1/2 INCHES WIDE (W), WINDOW SIZE: 2-1/8 INCHES H BY 5-3/16 INCHES W, WINDOW POSITION: 7/16 INCHES FROM LEFT, ONE INCH FROM BOTTOM, 2,000/BOX. 4. 400 BOX NAICS 424120 Matl Code 8733652 BX ENVELOPE, WHITE, INSERT RETURN, NO WINDOW, LOW INCOME DISCOUNT PROGRAM CERTIFICATION/BLUE, 3-3/4 INCHES H BY 8-3/4 INCHES W, 2,000/BOX.