Tired of struggling with envelopes that don't fit your 1099 NEC forms? These double-window envelopes are specially designed for the 2023 tax season, made to perfectly fit 3-up forms printed from QuickBooks or other accounting software. Measuring 3-13/16” x 8-3/8”, they keep your forms securely in place with windows that align just right—top window for the recipient's address, bottom for your return info. No more shifting or awkward folding! The security tint lining keeps everything confidential, and the gum-seal flap means no licking or moistening (thank goodness). Made from sturdy 24# white wove paper, these envelopes feel professional and protect your forms during mailing. Each pack comes with 25 envelopes, IRS-approved and ready to use. Simplify your tax filing process with envelopes that actually work. Order yours and mail with confidence!