Item Number E938 Use this double window envelope for convenience when mailing checks. To confirm compatibility with your checks, order a free sample or call our customer service team at the number located at the bottom of this page Details: Envelope Size: 3 3/4" x 8 5/8" Top window size is 7/8 x 3 1/2 Top window is located 2 1/2" from bottom and 7/16" from left side Bottom window size is 1 x 4 Bottom window is located 3/4" from bottom and 11/16" from left side 24lb security lined white wove stock Quantity discounts built into pricing. Call office for large quantity orders Pricing is for 500 envelopes - Shipping is Free