Go from desk to mail bin in minutes. Featuring a convenient Peel & Seal strip for no-fuss mail prep, Adams® 3-Up 1099-NEC Peel & Seal Double-Window Security Tint Envelopes are designed specifically for three-per-sheet 1099-NEC forms. Crafted from 24 lb white wove paper, each envelope features a security tinted pattern and precisely aligned windows to ensure that sensitive, confidential information is kept private, even when a sealed envelope is held up to the light. "Important Tax Return Document Enclosed" is printed on the front face. Seam Type: Side; Flap Type: Commercial; Trade Size: #7; Security Tinted: Yes.