- Double-window Envelopes are designed for use with 3-Up tax forms
- 24 lb. White wove finish confidential Security tinted Envelopes
- Two clear cellophane windows to reveal the return address and the recipient's address
- Pack of 25 IRS Approved Gummed Seal Tax Envelopes
- Envelope Size: 3 7/8 x 8 7/8