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Closer Torque Rating vs. Door Inertia: Why the Physics of Your Opening Determines the Right Closer Size

What This Article Covers -- and Who It Helps When a closer fails to latch a heavy corridor door or slams shut faster than it should, the instinct is to blame the spring adjustment. The real cause is u...

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Sep 6, 2026

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

Fail Secure vs. Fail Safe on an Electrified Mortise Lock: How the Wrong Choice Creates a Code Problem

What This Article Covers and Who It Helps When an electrified mortise lockset shows up on a hardware schedule, one of the first decisions is deceptively simple-looking: fail secure or fail safe? That ...

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Sep 6, 2026

Bump Keys and Your Door Cylinders: What the Attack Looks Like and How Hardware Spec Stops It

What This Article Covers and Who It Helps Bump keying is one of the fastest ways an unauthorized person can open a standard pin-tumbler lock without leaving visible evidence of forced entry. This guid...

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Sep 5, 2026

Cam-Action vs. Rack-and-Pinion Door Closers: Which Mechanism Belongs on Your Opening?

Two Mechanisms, One Job -- But Very Different Results This article explains the mechanical difference between cam-action and rack-and-pinion door closers, when each design has the advantage, and how t...

ADA compliance cam-action closers commercial hardware door closers specification guide

Sep 5, 2026

Exit vs. Communicating: How the Mortise Latchset Function Shapes the Entire Opening Schedule

Why the Function Label on a Mortise Latchset Is Not Just a Catalog Detail This guide is for contractors, hardware specifiers, and facility managers who are building or reviewing a door hardware schedu...

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Sep 5, 2026

Door Closer Spring Size by Door Width and Weight: Getting the Number Right Before You Install

Why Spring Rate Is the First Closer Decision, Not an Afterthought This article helps contractors, facility managers, and specifiers choose the correct door closer spring size based on door width and w...

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Sep 4, 2026

Revolving Door Hardware Basics: What Every Spec and Maintenance Team Needs to Know

What This Article Covers -- and Who It Helps Revolving doors are a common sight at hotel lobbies, hospital main entrances, corporate headquarters, and large retail facilities. They manage high foot tr...

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Sep 4, 2026

Door Pull CTC: Why the Center-to-Center Dimension Is the First Decision on Any Pull Hardware Schedule

What CTC Means on a Door Pull -- and Why It Drives Everything Else This article is for contractors, facility managers, and architects who need to specify or order door pulls without sending the projec...

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Sep 4, 2026

Office Function vs. Entrance Function Locksets: How One Wrong Code Breaks a Hardware Schedule

If you have ever received a hardware submittal back with a red-line on the lock function, there is a reasonable chance the specifier or contractor confused office function with entrance function. Thes...

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Sep 3, 2026

Reading a Sequence of Operation Diagram for Electrified Door Hardware: A Field and Spec Guide

What This Guide Covers and Who It Helps Every electrified door opening -- whether it is an access-controlled entrance at a school, a monitored corridor door in a hospital, or a secured server vestibul...

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Sep 3, 2026

Plain Bearing vs. Ball Bearing on a Door with a Closer: Why the Closer Is the Decision-Maker

The Closer Changes Everything About How a Hinge Wears This article is for commercial contractors, facility managers, and architects who are specifying or replacing hinges on doors that carry a door cl...

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Sep 3, 2026

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