COMPUTER CHECK ENVELOPES – Made to perfectly fit Computer PERSONAL Wallet Checks from VersaCheck, QuickBooks, Quicken, and others DOUBLE WINDOW – check address information aligns perfectly with the check envelope double windows. A built-in tab holds the check in place for perfect alignment and helps keep private information covered. Eliminate hand-addressing and pay bills faster. HIGH SECURITY – Security pattern printed on inside to hide sensitive information for privacy and confidentiality. HIGH QUALITY – Premium 24 lb Stock for a premium look and feel.