Item Number 1970S (Replacement Item Number DWU4S) Use this envelope with item B4PERF05. Order one envelope for all your W-2 and 1099 needs. The security tint and cellophane windows ensure the privacy of information. Envelope Size: 5 5/8 x 8 3/4 24 pound White Wove paper Top Window Size: 2 1/2 x 9/16 Top Window Plcement: 1/2 from left, 3 11/16 from bottom Bottom Window Size: 2 1/2 x 9/16 Bottom Window Placement: 3 1/16 from left, 1 1/2 from bottom Self Seal closure Long flap opening Black ink imprint reads IMPORTANT TAX DOCUMENT ENCLOSED Does not work with ATX software. Use envelope UNIE instead Ships direct from the plant in 48 hours or less