Keystone License Search
Certified products typically bear a label that indicates which specification the product was certified to and some information about the manufacturer, model and the rating. The label on your window, door or other product means that the product was certified by Keystone Certifications based on testing that was completed for specific requirements. Examples: NFRC, CSA, ASTM, AAMA.
This label can be used to find the manufacturer and more product information by looking up the relevant code, CAR# or Cert# in our Certified Product Directory.
