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Why Outswing Doors Need a Parallel Arm Closer: Getting the Mount Right the First Time

The Problem With Outswing Doors and Standard Closer Arms This article explains why outswing doors demand a parallel arm closer configuration, how the mount works mechanically, where installers go wron...

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Oct 23, 2026 Our Blog

High-Security Cylinder Showdown: Accentra KeyMark vs. Sargent Keso F1 vs. Medeco M4

What This Guide Covers -- and Who It Helps When a facilities director, security consultant, or commercial hardware specifier asks for a "high-security cylinder," they usually mean one thing: a cylinde...

Accentra KeyMark Medeco M4 Sargent Keso F1 high-security cylinders key control

Oct 23, 2026 Our Blog

Bathroom Lock vs. Privacy Function: Choosing the Right Mortise Latchset for Restroom Doors in Commercial Buildings

Why the Wrong Restroom Lock Function Creates Liability, Complaints, and Callbacks This guide is for contractors, facility managers, and architects who need to specify or replace a bathroom lock on a c...

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Oct 23, 2026 Our Blog

Getting the Sequence Right: How to Select a Door Coordinator for Closer Pairs

Why Closer Pairs Need a Coordinator If you have ever watched the active leaf of a double door slam shut before the inactive leaf had a chance to clear the astragal, you already understand the problem ...

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Oct 22, 2026 Our Blog

Maison Keying for Apartment Buildings: One Key for Common Areas, One Key for Home

What This Article Covers and Who It Helps If you manage a residential apartment building, are a contractor bidding a multi-family project, or are an architect writing a hardware schedule for a new mid...

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Oct 21, 2026 Our Blog

Why Your Commercial Door Is Dropping at the Latch: Diagnosing and Fixing Hinge Sag

What Is Hinge Sag, and Why Does It Matter? Hinge sag is the gradual downward drift of a door's latch edge caused by failure or fatigue in one or more of the hinges supporting it. On a commercial openi...

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Oct 21, 2026 Our Blog

Picking the Right Astragal for a Non-Rated Door Pair: What the Opening Actually Demands

What This Article Covers -- and Who It Helps When two door leaves meet at the center of an opening without a center mullion, something has to close that gap. On a non-fire-rated pair, you have more fl...

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Oct 20, 2026 Our Blog

Accentra NexTouch Lever Not Snapping Back? SPRG5300 Return Spring Fix

This 39-second short fixes an Accentra NexTouch lever that does not snap back level. The repair: replace the SPRG5300 lever return spring.

Oct 18, 2026 YouTube Shorts

PDQ VP92905 IC Tailpiece for GT & GP Series Levers (6 or 7-Pin SFIC Core)

This 45-second short shows the PDQ VP92905 interchangeable-core (IC) tailpiece for PDQ GT and GP Series lever locks, and how the control key removes the core.

Oct 18, 2026 YouTube Shorts

Sargent 700 Series ET Trim Lever Drooping? 97-0425 Return Spring Fix

This 36-second short fixes a drooping Sargent 700 Series ET exit trim lever. The repair: replace the 97-0425 lever return spring.

Oct 18, 2026 YouTube Shorts

Great Grand Master Keying Explained: When Your Facility Outgrows a Three-Level Key System

What This Article Covers and Who It Helps A great grand master key (GGMK) system is the most complex key hierarchy used in commercial and institutional buildings. If you manage a university campus, a ...

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Oct 17, 2026

Fail Safe vs. Fail Secure Is Only Half the Question: How Wiring Mode Shapes the Entire Access Control Sequence on a Mortise Lock Opening

The Decision That Happens After the Spec Is Written This article is for electrical contractors, low-voltage integrators, and facility managers who are past the point of choosing a fail safe electrifie...

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Oct 17, 2026 Our Blog

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