Quality Park 21439 Quality Park Security Tint HCFA Window Envelopes， White，500/Bx[Product Information]- Enter your model numberto make sure this fits.
- White window envelope with a 4 1/2w x 1h sized window on the right side.
- Designed for Medicare Form #HCFA-1500， Medicaid， and other health insurance claim forms.
- Security lining.
- Window envelope.
