2 boxes of blue security pattern double window envelopes. 1 box CE-05B 8 1/2x3 3/4". Window indents left are 1/4" and 1/2", 9/16"" from top, 5/8"" from bottom, top window 3 3/4" long, bottom is 4". Approx 1/3-1/2 box CE-05BS 8 9/16x3 3/4". Window indents left are 1/4" and 1/2", 1/2"" from top, 1/2" from bottom, top window 3 3/4" long, bottom is 4". Ask for ext 318. Make a fair offer