500 PACK Business Envelope Double Window SELF SEAL Adhesive Peel Strip Intuit Quickbooks Voucher Checks Compatible Safe Confidential Private Security Tint White Smooth Wove 24lb 3 5/8&rdquo; x 8 11/16&rdquo; PERFECT FIT: 3 5/8 x 8 11/16 Overall Size and Precise Double Window Placement Insures Perfect Fit for Intuit Quickbooks Compatible Voucher and Laser Printed Checks Without exposing Sensitive Information. SECURE: Keep Private Business and Personal Data Confidential with the Fully Opaque Non Transparent Security Tint. CONVIENENT: The Peel and Seal Redi-Strip Makes Loading these Envelopes Quick and Efficient. No Need for Licking or Moisteners. HIGH QUALITY: Made in the USA Premium 24lb White Paper with Smooth Wove Finish Makes a Lasting Impression on Vendors. INVOICES: Made for use with QuickBooks invoices.