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3 Articles

automatic door bottoms ×

Fire-Rated Automatic Door Bottoms: How to Specify and Install Them Right

Why the Gap at the Bottom of a Fire Door Matters More Than You Think The space beneath a fire door is one of the most overlooked details in door assembly compliance. Too much clearance and you fail an...

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Apr 22, 2026

Fire-Rated and Acoustic Automatic Door Bottoms: A Specifier's Guide to Getting the Assembly Right

What This Guide Covers Automatic door bottoms that carry both a fire rating and an acoustic (sound attenuation) rating occupy a narrow but critical position in commercial hardware scheduling. Specifyi...

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Apr 22, 2026

Full Mortised Auto Door Bottoms: Specifying and Installing the Right Drop Seal for Commercial Openings

Why the Door Bottom Is the Most Overlooked Seal in the Assembly When architects and contractors detail a door opening, the perimeter gasketing and threshold typically receive careful attention. The au...

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Apr 22, 2026