EGP IRS Approved 1099 Double Window Envelope Pricing is for 25 Form 1099 Tax Envelopes Size: 3 7/8 x 8 1/4 Top Window Size: 1 x 3 1/8 From Left 1/2 From Bottom: 2 3/16 Bottom Window Size: 1 1/8 x 3 1/8 From Left: 1/2 From Bottom: 5/8 Latex Seal