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