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3 Articles

passage latchsets × May 2026 ×

Grade 2 Passage Latchsets on Fire-Rated Openings: Where the Spec Gets Quietly Wrong

When a Passage Latchset Ends Up on a Fire Door A passage latchset looks simple: no key, no thumbturn, just a lever that retracts a latch. But once that latchset goes on a fire-rated opening, the conve...

NFPA 80 UL 10C compliance door schedule specification fire-rated door hardware passage latchsets

Aug 8, 2026

Grade 2 vs Grade 1 Passage Latchsets on Fire-Rated Openings: Where the Spec Gets Quietly Wrong

The Problem Nobody Catches Until the Inspector Does A Grade 2 cylindrical passage latchset shows up on a hardware schedule. It carries a UL 10C positive-pressure fire rating label. The hardware suppli...

BHMA grades NFPA 80 compliance cylindrical locks fire-rated hardware passage latchsets

Jul 31, 2026

Why a Passage Latchset Fails the Fire Door Inspection: The Four Gaps Most Facilities Miss

What This Article Covers and Who It Helps A Grade 1 passage latchset looks identical on both sides of a corridor door whether it carries a UL fire label or not. That visual similarity is exactly why p...

NFPA 80 cylindrical locks fire door compliance life safety hardware passage latchsets

Jul 30, 2026