You've got a full schedule; so save time when paying bills with double window laser envelopes. Envelopes are formatted to fit checks compatible with Quicken®, QuickBooks®, Xero™, NetSuite, Sage and other software accounting packages, as well as for general use. Simply print your document so your address appears in the upper window and the payee's address is in the lower window, and never hand-address business envelopes when paying bills again.