David Bolton Classroom Knob Locks Are Not One-Size-Fits-All: Matching the Lock Function to the School Security Plan Why the Lock Function on a Classroom Door Matters More Than the Hardware Grade This article is for school facilities managers, K-12 construction managers, and contractors specifying or replacing locks... K-12 facilities classroom locks cylindrical locksets lockset functions school security hardware Apr 23, 2026
David Bolton Classroom Lockset Function Codes Decoded: What the Letter After the Series Number Actually Controls Why the Function Code Matters More Than the Lock Body This article is for contractors, facility managers, and architects who are specifying or replacing cylindrical locksets on classroom doors and kee... ANSI lock functions Grade 2 locksets classroom locksets lockset functions school door hardware Apr 23, 2026
