David Bolton SVR Exit Devices on Non-Rated Door Pairs: Why the Bottom Strike Is the Detail That Breaks the Opening The Part Nobody Talks About Until the Door Will Not Latch This article covers a specific field problem that affects surface vertical rod (SVR) exit device installations on non-rated door pairs: the bo... SVR panic hardware commercial egress door pair hardware exit devices facility maintenance Apr 23, 2026
David Bolton Manual Flush Bolts on Inactive Door Leaves: Why the Bolt You Throw by Hand Creates Problems You Don't See Until Inspection What This Article Covers -- and Who It Helps Manual flush bolts seem like a simple solution: throw the lever, the bolt seats into the floor or header strike, and the inactive leaf of a door pair stays... commercial door hardware door pair hardware fire door compliance flush bolts inactive door leaf hardware Apr 23, 2026
David Bolton Aluminum Astragals for Door Pairs: How to Choose and Install the Right Meeting Stile Seal Why the Gap Between Double Doors Matters More Than You Think When two door leaves meet at the center of an opening, that joint is called the meeting stile . Without a proper seal at the meeting stile,... astragals commercial door seals door pair hardware fire door hardware meeting stile Apr 22, 2026
David Bolton Specifying Flush Bolts for Inactive Leaves: A Practical Guide for Metal Door Openings Why Flush Bolts Matter on Inactive Door Leaves On a pair of commercial doors, the inactive leaf -- the one that typically stays closed -- needs its own latching solution. That solution is almost alway... door pair hardware fire door compliance flush bolts hollow metal door hardware inactive leaf hardware Apr 22, 2026