David Bolton Cylindrical Lockset Backset 2-3/4 vs 2-3/8: How to Match the Latch to the Door Before You Drill The Half-Inch Difference That Derails a Hardware Schedule This article explains the two most common latch backset dimensions on cylindrical locksets -- 2-3/4 inch and 2-3/8 inch -- what each one means... backset commercial door hardware cylindrical locksets door hardware fundamentals hardware specification Aug 31, 2026 Our Blog
David Bolton Privacy Lock Mortise vs. Cylindrical: Choosing the Right Mechanism Before the Door Gets Drilled Two Lock Bodies, One Function -- and the Choice Matters Before the Drill Touches the Door This article is for commercial contractors, facility managers, and architects who need a privacy-function lock... commercial door hardware facility maintenance lock specification mortise locks privacy lock function Aug 31, 2026 Our Blog
David Bolton Non-Ferrous Hinges in Corrosive Environments: When Stainless Steel or Brass Is the Right Call The Opening Condition Nobody Writes Into the Spec This article helps contractors, facility managers, and architects understand when standard steel hinges are the wrong material choice — and how to ide... commercial door hardware corrosion resistance hinges specification writing stainless steel hardware Aug 31, 2026 Our Blog
David Bolton Locking Down the Server Room: How to Spec Door Hardware for Data Center Security What This Guide Covers -- and Who It Is For Server rooms and data center enclosures have hardware requirements that sit at the intersection of physical security, life safety code, and continuous-uptim... access control commercial door hardware data center electrified hardware server room security Aug 30, 2026 Our Blog
David Bolton When the Finish You Specified Is Not the Finish That Ships on Time: Entry Mortise Lock Lead Times and How to Plan Around Them The Finish Decision That Quietly Controls Your Schedule This article is for contractors, project managers, facility directors, and architects who have been burned by a late hardware delivery -- not be... commercial door hardware entry locks finish selection hardware lead times mortise locksets Aug 30, 2026 Our Blog
David Bolton When a 6-Inch Hinge Is the Right Call: Oversized Hinges on Heavy Commercial Doors Explained Why the Hinge Size on a Heavy Door Is a Structural Decision, Not a Catalog Upgrade This article is for commercial contractors, facility managers, and specifiers who have faced a door that keeps saggin... commercial door hardware full mortise hinges heavy duty hardware hinge specification hinges Aug 30, 2026 Our Blog
David Bolton Thread-Cutting vs. Thread-Forming: Getting Hinge Fasteners Right on Hollow Metal Frames Why the Fastener Under the Hinge Leaf Matters More Than Most Installers Realize This article is for commercial subcontractors, facility maintenance teams, and hardware specifiers who install or replac... commercial door hardware fasteners hinges hollow metal frames installation Aug 28, 2026 Our Blog
David Bolton Your Phone Is the Key: What to Know Before Specifying Mobile Credentials and Reader Compatibility What This Article Covers -- and Who It Helps More facilities are moving away from plastic keycards and toward smartphone-based access control. If you are a contractor quoting an electrified opening pa... BLE readers access control commercial door hardware electrified hardware mobile credentials Aug 25, 2026 Our Blog
David Bolton Interlocking Thresholds for Security Applications: Where the Floor Seal Becomes Part of the Defense What This Article Covers This guide explains how interlocking thresholds contribute to door security at commercial openings, which building types benefit most, and what specifiers and facility teams n... commercial door hardware door security facility security perimeter sealing thresholds Aug 24, 2026 Our Blog
David Bolton Door Closer Cover Materials and Finish Options: What the Spec Should Actually Say Why the Closer Cover Is Not Just a Cosmetic Decision This article covers the practical differences between door closer cover materials, the finish options specifiers and facility teams encounter on co... BHMA finishes commercial door hardware door closers hardware finishes specification writing Aug 23, 2026 Our Blog
David Bolton Fire Door Annual Inspection: Why Hinges Fail the Walk-Through (And What to Do Before the Inspector Arrives) What This Article Covers and Who It Helps Every fire door in a commercial building must pass an annual inspection under NFPA 80. Facility managers, maintenance technicians, and the contractors they ca... NFPA 80 hinges annual fire door inspection ball bearing hinge commercial door hardware fire door compliance Aug 23, 2026 Our Blog
David Bolton Cylinder Finish Matching to a Lockset: Where the Spec Goes Wrong and How to Get It Right Why Cylinder Finish Matching Is Harder Than It Looks This article covers one of the most consistent sources of field callbacks in commercial door hardware: the cylinder finish does not match the locks... ANSI BHMA finishes commercial door hardware cylinders hardware specification lockset finishes Aug 22, 2026 Our Blog