QuickBooks Quicken Tight-Fit Double Window Envelopes – Moisture-Seal (CP31-605)Double Window Envelopes for QuickBooks Checks and Quicken Checks (Tight Fit, Moisture Seal) Box of 1000 Envelopes Overview Purpose built envelopes for QuickBooks checks, these tight fit 8 double window envelopes align precisely so amounts and memos dont peek through. Privacy tint with durable white stock. Key features (CP31 605) Part No.: CP31 605 Tight fit double window envelopes for QuickBooks checks Works for QuickBooks checks and envelopes layouts