David Bolton Astragal Selection for Fire-Rated Door Pairs: What the Opening Schedule Has to Get Right Why the Astragal Decision on a Fire-Rated Pair Is Not an Afterthought This article is for commercial contractors, facility managers, and specifiers who are working with labeled pairs of fire-rated doo... NFPA 80 astragals door pairs fire-rated doors meeting stile hardware Aug 30, 2026 Our Blog
David Bolton The Seal at the Center of the Door: How Meeting Stile Weatherstripping Works on Aluminum Pairs What Is a Meeting Stile Seal -- and Why Does It Matter? This article covers the weatherstripping that runs along the vertical center edge where two aluminum doors meet when both panels are closed. It ... aluminum doors door pairs meeting stile perimeter seals weatherstripping Aug 27, 2026 Our Blog
David Bolton Astragal Selection for Non-Rated Door Pairs: Getting the Meeting Edge Right Without Fire-Door Rules in the Way What This Article Covers and Who It Helps Non-rated door pairs -- double doors without a center mullion -- share a common problem: the gap at the meeting edge lets in light, air, sound, and foot traff... astragal commercial door hardware door pairs meeting edge seal weatherstripping Aug 14, 2026 Our Blog
David Bolton Surface Vertical Rod Exit Devices on Door Pairs: Why the Strike Sequence Gets Decided After the Astragal Is Already Installed Why This Gets Ordered Wrong on Paired Openings Surface vertical rod (SVR) exit devices are a common specification on pairs of doors in schools, hospitals, retail exits, and industrial facilities. They... door pairs exit devices fire exit hardware life safety compliance surface vertical rod Jun 8, 2026 Our Blog
David Bolton Surface-Applied Aluminum Astragals on Door Pairs: Why the Final Seal Adjustment Gets Left for After Move-In What This Article Covers and Who It Helps Surface-applied aluminum astragals seal the meeting edge between the two leaves of a door pair. This article is for commercial subcontractors, facility mainte... astragals commercial door hardware door pairs seals and sweeps weatherstripping Jun 3, 2026 Our Blog
David Bolton Aluminum Astragals on Door Pairs: Why the Seal Stops Working Before the Door Does What This Article Covers This guide is for facility managers, commercial contractors, and maintenance technicians dealing with door pairs that no longer seal at the meeting edge. The aluminum astragal... astragals commercial door hardware door pairs neoprene seals weathersealing May 13, 2026 Our Blog
David Bolton Aluminum Astragals on Hollow Metal Door Pairs: Why the Seal Material and Finish Have to Be Decided at the Opening Stage What This Guide Covers and Who It Is For When a hollow metal door pair goes in and the gap at the meeting stiles leaks air, water, sound, or smoke, the astragal is almost always the fix. But specifier... astragals door hardware specification door pairs hollow metal doors weathersealing Apr 23, 2026 Our Blog
David Bolton Steel Flat Bar Astragals on Hollow Metal Door Pairs: When the Opening Tells You Which Profile to Use Why the Astragal Profile Decision Gets Made at the Wrong Time This article is for contractors, facility managers, and hardware specifiers who are responsible for hollow metal door pairs in commercial,... astragals commercial door hardware door pairs hollow metal doors seals and sweeps Apr 23, 2026 Our Blog
David Bolton Manual Flush Bolts on Inactive Door Leaves: The Rod Length Decision That Bites You After the Door Is Hung Why the Rod Length on a Manual Flush Bolt Is Not a Minor Detail This article helps contractors, facility managers, and hardware specifiers understand how manual lever extension flush bolts work on the... commercial door hardware door pairs fire door compliance flush bolts inactive leaf hardware Apr 23, 2026 Our Blog
David Bolton Nylon Brush Astragals on Door Pairs: A Specifier's Guide to Getting the Seal Right Why the Meeting Stile Gap Is a Problem Worth Solving On any pair of commercial doors, the vertical gap where the two leaves meet in the center is one of the most overlooked details in a hardware sched... astragals commercial door hardware door pairs fire door compliance meeting stile seal Apr 22, 2026 Our Blog
