Streamline Your Certifications: The Keystone Advantage
Maximize efficiency with one certification body for multiple certifications. Consolidate your NFRC IA, NAFS, Impact, IG, and Safety Glazing certifications with Keystone.
Under the Keystone Newsletter Archive
Past editions are available for review by clicking on a title below.
Function Check vs. Calibration
A guide to the difference between function checks and calibration of measuring equipment, and when each is required.
Sunset of NFRC Door Matrix Label
Use of the Swinging Door Temporary Matrix Label will end on January 1, 2026.
News and Updates from Keystone Certifications
Safety Glazing Program coming in 2025, fee schedule updates, and new Client Portal features.
ENERGY STAR® Version 7.0
All new ENERGY STAR® product certifications must meet Version 7.0 requirements. Keystone will print V7.0 labels starting August 1, 2023.
Keystone Certifications - Returning to In-Person Inspections
Keystone inspectors have resumed on-site inspections. Remote inspections remain available upon request.