David Bolton Full Surface vs. Center Pivot Continuous Geared Hinges: Choosing the Right Configuration When the Door Frame Has No Rabbet to Mortise Into The Configuration Problem Nobody Flags Until the Hinge Arrives This article is for contractors, facility managers, and specifiers who are selecting a continuous geared hinge and have hit a specific wa... center pivot hinge commercial door hardware continuous hinges door hardware specification full surface hinge Jul 17, 2026 Our Blog
David Bolton Key Blank Materials and Cutting Depths: What Locksmiths and Facilities Teams Get Wrong at the Counter Why Key Blank Selection Is a Hardware Decision, Not Just a Supply Run This article covers the two most overlooked variables when ordering or cutting replacement keys for commercial door hardware: blan... commercial-locksmith cylinders-and-keying facility-hardware key-blanks master-key-systems Jul 16, 2026 Our Blog
David Bolton When a Deadbolt Is the Right Answer: Specifying Auxiliary Locks for Commercial Doors That Do Not Need a Latchbolt What This Article Covers and Who It Helps Not every commercial door needs a cylindrical lockset with a latchbolt. In a surprising number of situations -- electrical rooms, pipe chases, storage closets... auxiliary locks code compliance commercial hardware deadbolts hardware specification Jul 16, 2026 Our Blog
David Bolton Spring Hinge Combination Tables: Why the Count You Picked on Paper Fails When the Door Hits the Frame The Problem Nobody Catches Until the Inspector Does A door swings open and stays there. Or it slams before the latch can catch. Or the inspector notes that the fire-rated assembly is not self-closing ... NFPA 80 commercial hinges fire door compliance self-closing hardware spring hinges Jul 16, 2026 Our Blog
David Bolton Access Level Scheduling Explained: How Time-Based Door Permissions Change What Your Hardware Needs to Do What This Article Covers and Who It Helps Access level scheduling is the practice of assigning different door permissions to different credential holders based on the time of day, day of week, or cale... access control commercial door hardware door scheduling electrified hardware time-based access Jul 15, 2026 Our Blog
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 Our Blog
David Bolton Extended Door Bottom Shoes on Fire-Rated Openings: When the 3-Inch Height Changes What the Inspector Expects What This Article Covers and Who It Helps An extended door bottom shoe looks like a simple piece of extruded aluminum screwed to the bottom of a door. Most installers treat it as the last item on the ... NFPA 80 compliance Pemko door bottom shoes fire-rated doors seals and sweeps Jul 15, 2026 Our Blog
David Bolton NRP Hinges on Outswing Doors: When the Pin Is the Vulnerability and How to Fix It Before the Frame Is Set The Problem Nobody Catches Until the Door Is Already Hung Outswing commercial doors show up constantly in schools, healthcare facilities, retail storefronts, and industrial buildings. They improve egr... commercial door hardware hardware specification hinges outswing doors security hardware Jul 14, 2026 Our Blog
David Bolton Head and Jamb Seal Selection: Matching the Perimeter Weatherstrip Profile to the Opening Why Perimeter Seal Selection Is Not a Default Decision This article covers how to choose the correct head and jamb weatherstrip profile for commercial door openings -- and helps contractors, facility ... commercial door gasketing fire door smoke seal head and jamb seal kerf-in surface-applied seal perimeter weatherstrip Jul 13, 2026 Our Blog
David Bolton Panic Hardware in Assembly Occupancies: What the Occupant Load Threshold Actually Triggers What This Article Covers and Who It Helps If you are specifying, bidding, or inspecting door hardware in a theater, arena, conference center, house of worship, banquet hall, or any other assembly-use ... assembly occupancy code compliance exit devices life safety panic hardware Jul 13, 2026 Our Blog
David Bolton Matching the Sweep Insert to the Door Gap: Why Brush vs. Blade Makes or Breaks the Sill Seal What This Article Covers and Who It Helps When a door sweep stops performing, the aluminum carrier rarely fails first. The insert does. The real question most facility managers and commercial subs ski... Pemko door bottom hardware door sweeps nylon brush insert sill seals Jul 13, 2026 Our Blog
David Bolton Mortise Exit Devices vs Rim Exit Devices: Choosing the Right Panic Hardware for the Opening What This Article Covers -- and Who It Helps When a hardware schedule calls for panic hardware, one of the first decisions is whether to use a rim exit device or a mortise exit device . The choice aff... commercial door hardware exit devices fire exit hardware mortise hardware panic hardware Jul 12, 2026 Our Blog