David Bolton Passage vs. Closet Function on a Mortise Latchset: Why the Distinction Matters Before the Door Gets Prepped Two Functions, One Mortise Body — and a Decision That Has to Happen Early This article is for commercial contractors, facility managers, and architects who specify or install Grade 1 mortise latchsets... closet function commercial door hardware hardware specification mortise latchset passage function Sep 11, 2026 Our Blog