Quality Park Healthcare Claim Form Self-Seal Security Envelopes, For (HCFA) CMS-1500, 24-lb, White Wove, 4-1/2" x 9-1/2", 500 Per Box (QUA21438) SAVE WITH SELF-STICK: Quality Park double-window security envelopes have a fold-away self-sealing flap that saves you time &amp; money HASTE, NOT WASTE: Our REDI-SEAL envelopes dont require moisture, seal instantly &amp; won't close and stick before you're readyyou won't find ruined samples in the box FORMATTED FOR HEALTHCARE: Single window is positioned to display the name and address from a tri-fold CMS-1500 without revealing private information ENHANCED SECURITY: Guard your patients' HIPAA-protected data with a security tint that makes envelopes difficult to see through; a security pattern scrambles the appearance of numbers and text AN EXCELLENT VALUE: Get 500 white wove 4-1/2 inch x 9-1/2 inch envelopes at a stock-up price