Preprinted Income Tax Return Envelopes, 9" x 12" Catalog (Open End), 100 Envelopes Made of Premium 28lb. White Paper, Envelopes can be customizable with your company name, simply run them through any Laser or Inkjet printer or Print Your Company info on 2" x 4" labels and adhere into the Prepare by Cell. Envelopes can be used for any Tax Year. Deep Gum Flap with Strong Adhesive, Made in USA