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16 Articles

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NFPA 80 Fire Door Inspection: The 13-Point Annual Checklist Every Facility Needs

What This Article Covers -- and Who It Helps NFPA 80, Standard for Fire Doors and Other Opening Protectives , requires that every fire door assembly be inspected and tested annually. This guide walks ...

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Sep 6, 2026 Our Blog

Why the Core Inside a Wood Door Determines Whether It Earns a Fire Rating

What This Article Covers -- and Who It Helps If you are specifying wood doors for a fire-rated opening -- in a school corridor, a hospital stairwell, or a commercial tenant separation -- the single mo...

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Aug 29, 2026 Our Blog

Why Plain Bearing Hinges Fail Before the Door Does: Reading the ANSI Grade Before You Order

The Hinge Passed Spec on Paper and Still Failed in the Field This article is for contractors, facility managers, and specifiers who have ordered what looks like a perfectly acceptable commercial hinge...

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Aug 22, 2026 Our Blog

Through-Bolt vs. Sex Bolt for Exit Devices: Which Fastening Method Belongs on Your Door

Two Ways to Anchor an Exit Device -- and Why the Choice Is Not Interchangeable This article explains the practical difference between through-bolt and sex bolt (also called barrel bolt or Chicago scre...

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Aug 3, 2026 Our Blog

Smoke Seals at Fire Corridor Doors: Category G vs Category H and What the Opening Actually Needs

What This Article Covers and Who It Helps Smoke seals at fire-rated corridor doors are one of the most frequently under-specified and mis-specified items on a door schedule. This guide explains what a...

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Jul 21, 2026 Our Blog

Fire Door Inspector Certification: What the FDAI Credential Actually Requires and Why It Changes Your Inspection Walk

Who This Article Is For and What It Covers This article explains the fire door assembly inspector (FDAI) certification process, what the credential actually tests, and how the inspection checklist con...

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Jul 7, 2026 Our Blog

Fire Pin Assemblies in Steel Hinges: What They Do, When They Matter, and How to Confirm the Opening Is Covered

What This Article Covers This guide explains what a fire pin assembly is inside a steel butt hinge, why it exists, which openings require it, and what facility managers, contractors, and specifiers sh...

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Jun 30, 2026 Our Blog

Spring Hinge Tension Adjustment After Installation: The Step That Gets Skipped on Small Doors

Why the Factory Tension Setting Is Never the Final Answer Spring hinges ship with a default tension setting intended for a mid-range door weight and size. For the installer or facility technician rece...

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May 14, 2026 Our Blog

Spring Hinges Without a Closer: Where the Self-Closing Requirement Meets a Real-World Size Limit

What This Article Covers Spring hinges are specified on fire-rated and non-rated doors when a self-closing function is required but a hydraulic door closer is not practical or budgeted. This guide is ...

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May 11, 2026 Our Blog

Heavy-Weight vs. Standard-Weight Hinges: The Specification Decision That Gets Made Too Late on Commercial Projects

Why Hinge Weight Class Is a Specification Decision, Not a Purchasing Detail This guide is for commercial contractors, facility managers, and architects who need to understand when a heavy-weight conce...

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Apr 23, 2026 Our Blog

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 Our Blog

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,...

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Apr 22, 2026 Our Blog

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