These products are ONLY compatible with QuickBooks/Quicken software. They will not work with the ACS software 8 3/4 X 3 9/16 Double Window Envelope/Checks Upper Window: 3 1/2 x 7/8 • 3/8 from left • 2 1/4 from bottom Lower Window: 3 1/2 x 7/8 • 7/8 from left • 11/16 from bottom
