Our 2021 1099 NEC envelopes will perfectly fit computer printed 3-part 2021 tax forms. 1099 NEC forms are formatted 3 per page for 2021, and these new small 1099 form envelopes will fit the 3 up forms perfectly. Your pre printed 1099 NEC laser forms will line up perfectly in the windows of our 1099 envelopes when printing from QuickBooks or similar accounting software. Recipient and return address will align perfectly in the window, with no worry about the personal information showing through the envelope windows Enjoy complete tax form security with our black security tint design. Sized at 3-13/16 inches x 8-3/8 inches, your 1099 NEC three part forms will slide into our envelopes with ease and not shift during transit. Your contents will stay sealed and secure during transit thanks to the permanent peel and seal glue closure that make it easy to close each envelope without the need for licking or moistening the flap. Simply pull the strip away and press to seal. Ensure the recipients don’t throw away this important mail thanks to the preprinted envelope that states, “IMPORTANT TAX RETURN DOCUMENT ENCLOSED” on the front of the envelope, and prevent confusion with other envelopes during tax season thanks to the “1099-NEC” label printed inside the window.