Just slip the form inside and seal. You will save hours of addressing time. Security-lined for confidentiality. Special callouts available. Add any message that you need. Bar code and postal FIM's printing also available. Envelope Size: 6 x 3 Upper window 2 5/8 x 5/8 and 5/16 from left and 2 13/16 from bottom. Lower window 3 1/8 x 7/8 and 5/16 from left and 3/4 from bottom Pricing is for 250 envelopes Ships direct from the plant in 48 hours or less Additional Details ------------------------------ Product description: Just slip the form inside and seal. You will save hours of addressing time. Security-lined for confidentiality. Special callouts available. Add any message that you need. Bar code and postal FIM's printing also available. Envelope Size: 6 x 3 Upper window 2 5/8 x 5/8 and 5/16 from left and 2 13/16 from bottom. Lower window 3 1/8 x 7/8 and 5/16 from left and 3/4 from bottom Pricing is for 250 envelopes