About Keystone Product Photos

Keystone was founded as a National Fenestration Rating Council (NFRC) licensed Inspection Agency in 1998 by Former President, Marcia Falke, building on her more than 25 years experience in fenestration testing & certification. Since then, Keystone has added numerous certification, inspection and quality assurance programs focused on energy efficiency and structural quality. Our programs are utilized in a wide variety of product categories ranging from building products to appliances.

Keystone retains licenses, accreditations and recognition from a number of accreditation and government bodies, as well as memberships and affiliations with various industry associations, including:

Licenses, Accreditations, & Recognitions

Accreditation Photos Licensed Inspection Agency by the National Fenestration Rating Council (NFRC).

Accreditation Photos Accreditation by the American National Standards Institute (ANSI).

Accreditation Photos Accreditation by the International Accreditation Service (IAS).

Accreditation Photos EPA Recognized Certification Body (CB) for the ENERGY STAR® program.

Accreditation Photos Florida Building Commission Recognized Quality Assurance Entity.

Accreditation Photos Florida Building Commission Recognized Validation Entity.

Memberships & Affiliations

Accreditation Photos Member of the Northeast Window & Door Association since 2001.

Accreditation Photos Member of the Fenestration Manufacturers Association since 2003.

Accreditation Photos Contributing to standards development as a member of the ASTM.

Accreditation Photos Affiliate member of the Efficient Windows Collaborative.