David Bolton Closer Drop Plates and Back Plates Explained: When the Top Rail Is Too Shallow to Do the Job Alone What Are Closer Drop Plates and Back Plates? If you have ever arrived on a job site and found that a surface-mounted door closer has nothing solid to fasten to, you already know why adapter plates exi... Closer Accessories Commercial Door Hardware Door Closers Hardware Specification Installation Jul 15, 2026
David Bolton What UL 437 Actually Tests: How High-Security Cylinders Earn Their Listing and Where to Spec Them Why the Cylinder Listing on a High-Security Door Matters More Than the Lock Body When a facility manager, security consultant, or commercial sub is spec-ing hardware for a server room, pharmacy, recor... Commercial Door Hardware Hardware Specification High-Security Cylinders Key Control UL 437 Jul 10, 2026
David Bolton What WDMA I.S.1A Actually Controls on a Wood Door Before the Hardware Schedule Is Written Why the Door Standard Matters Before the Hardware Set Is Ever Built This article explains what the WDMA I.S.1A standard governs on architectural wood doors, how its performance grades affect hardware ... Code and Compliance Door Standards Hardware Specification WDMA Wood Doors Jul 5, 2026
