First, our forms have all been intentionally designed to be mailed in double windowed Number 9 (3 7/8 x 8 7x8) or standard number 10 double windowed envelopes. If you like to purchase your office supplies from Staples, you can buy/order Item Number: 266759.

Second, we print fold lines on all recipient forms to simplify your job of folding. Simply fold using the 'Z Fold' layout and stuff in the envelopes. We also print a PostNet barcode on each recipient form to help ensure a clean and consitent mailing process with the post office.

Don't forget, for a very reasonable cost E-File Magic can print and mail your forms for you! Simply check the 'Print and Mail' check box when transmitting your order file, or select 'Y' when uploading your Excel/CSV file, and we'll take care of the rest!