David Bolton Top-Hung vs. Bottom-Supported Sliding Door Hardware: Which System Belongs on Your Opening? What This Guide Covers and Who It Helps If you are specifying or replacing sliding door hardware for a commercial, institutional, or industrial opening, the first decision is also the most structural:... bottom-rolling door systems commercial door hardware sliding door hardware specification guide top-hung track Sep 13, 2026 Our Blog
David Bolton Cam-Action vs. Rack-and-Pinion Door Closers: Which Mechanism Belongs on Your Opening? Two Mechanisms, One Job -- But Very Different Results This article explains the mechanical difference between cam-action and rack-and-pinion door closers, when each design has the advantage, and how t... ADA compliance cam-action closers commercial hardware door closers specification guide Sep 5, 2026 Our Blog
David Bolton Specifying Access Doors for Drywall Ceilings and Walls: A Practical Guide What This Guide Covers Access doors are one of the most frequently under-specified components in a commercial construction project. When a drywall ceiling or wall conceals mechanical, electrical, or p... access doors commercial construction drywall hardware facility maintenance specification guide Apr 22, 2026
