David Bolton Frame Head Reinforcing on Hollow Metal Frames: What Gets Missed Before the Hardware Goes In What This Article Covers and Who It Helps Frame head reinforcing is one of those line items on a hardware schedule that looks minor until a closer arm pulls out of an underbuilt header, or an inspecto... door closer prep electrified hardware fire-rated openings frame head reinforcing hollow metal frames Jul 28, 2026 Our Blog
David Bolton Electric Latch Retraction on Exit Devices: How Access Control Unlocks the Door Without Touching the Bar What This Article Covers and Who It Helps If you are specifying or installing an access-controlled opening that also requires panic hardware, electric latch retraction (ELR) is the mechanism that ties... access control electric latch retraction electrified hardware exit devices fire-rated hardware Jul 28, 2026 Our Blog
David Bolton Hold-Back Function on a Mortise Lockset: When Latching Is the Problem, Not the Solution What This Article Covers This guide is for contractors, facility managers, and architects who encounter the hold-back function on a mortise lockset and need to understand what it does mechanically, wh... Grade 1 locks commercial door hardware facility management hold-back function mortise locksets Jul 28, 2026 Our Blog
David Bolton Getting the Closer Right for ADA: Opening Force, Sweep Time, and the Adjustments That Actually Matter What This Guide Covers and Who It Is For ADA closer compliance is not a product decision -- it is an adjustment decision. A Grade 1 closer installed on the wrong setting can fail the 5-pound opening-f... ADA compliance accessibility hardware commercial doors door closers opening force Jul 27, 2026 Our Blog
David Bolton Hotel Function and Double-Locking Deadbolts: What the F17 Mortise Function Actually Does at the Door What This Article Covers and Who It Helps Hotel function locksets and double-locking deadbolts are a specific class of hardware that confuses specifiers, contractors, and facilities teams alike. If yo... deadbolts hospitality hardware hotel function lock functions mortise locksets Jul 27, 2026 Our Blog
David Bolton Residential Weight Butt Hinges on Light Commercial Doors: Where the Grade Line Gets Crossed What This Article Covers and Who It Helps This guide is for facilities managers, commercial subcontractors, and architects who have encountered a door that looks fine on paper but starts failing withi... butt hinges commercial door hardware hinge specification hinges plain bearing hinges Jul 27, 2026 Our Blog
David Bolton Exit Device Prep on Hollow Metal Doors: What Gets Cut Wrong Before the Device Ever Ships Why Door Prep Is the Decision That Happens First -- and Hurts Last This article is for commercial subcontractors, door and hardware suppliers, and facility project managers who specify or install exit... door prep exit devices fire door compliance hollow metal doors panic hardware Jul 26, 2026 Our Blog
David Bolton Delayed Action on a Door Closer: The Accessibility Feature Nobody Adjusts Correctly What Is Delayed Action on a Door Closer? Delayed action is a hydraulic closer feature that holds the door open momentarily after it reaches a set angle -- typically somewhere in the range of 70 to 90 ... ADA accessibility closer adjustment commercial doors door closers hardware specification Jul 26, 2026 Our Blog
David Bolton Concealed Leaf Continuous Hinges: What the Hidden Leaf Actually Changes on the Job Site What This Guide Covers and Who It Is For Concealed leaf continuous geared hinges are specified on commercial openings where aesthetics, security, or sightline requirements push the hardware as close t... commercial door hardware concealed leaf hinge continuous hinges fire-rated openings hinge installation Jul 26, 2026 Our Blog
David Bolton UL 10C Positive Pressure Fire Testing: What the Label on Your Door Actually Certifies What This Article Covers and Who It Helps If you specify, install, inspect, or maintain fire-rated door assemblies, you have almost certainly seen the UL 10C designation on a door label or a hardware ... NFPA 80 UL 10C fire door compliance fire-rated hardware positive pressure testing Jul 25, 2026 Our Blog
David Bolton UL 1784 Smoke Leakage Compliance Basics: What Every Specifier Needs to Know Before the Door Gets Labeled What This Article Covers and Who It Helps If you are specifying, installing, or inspecting fire-rated door openings that must control smoke migration, UL 1784 is the standard that governs whether your... Category H gasketing S label UL 1784 fire door compliance smoke gasketing Jul 25, 2026 Our Blog
David Bolton Why Full Mortise Continuous Hinges Outlast the Doors They Hang: A Maintenance Perspective What This Article Covers Full mortise continuous geared hinges are specified on high-traffic commercial doors partly for their load distribution and anti-sag properties. But there is a maintenance arg... commercial door maintenance continuous hinges fire door inspection full mortise hinge institutional door hardware Jul 25, 2026 Our Blog
