Just slip the check or form inside and seal. You will save hours of addressing time. Security lined for confidentiality. Envelope Size: 9 x 4 1/8 Upper window is 3 1/2 x 15/16, 3/8 from left, and 2 3/8 from bottom. Lower window is 3 1/2 x 1, 7/8 from left, and 11/16 from bottom. Special callouts, postal endorsement, and postal indicia available. Add any message needed. Barcodes and postal FIM's for automated equipment also available Pricing is for 250 envelopes Ships direct from the plant Pricing is for 250 envelopes