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Communicating Function Locksets: When Both Sides of the Door Need a Key

What Is Communicating Function on a Door Lock? This article covers the communicating lock function (commonly coded F15) -- what it does, where it belongs, and the specifying decisions that trip up eve...

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Aug 18, 2026

Transom Frame Construction: What the Opening Schedule Has to Get Right Before the Frame Ships

What This Article Covers and Who It Helps Transom frames appear on opening schedules for schools, hospitals, office buildings, and industrial facilities whenever glazed panels, borrowed lights, or fix...

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Aug 18, 2026

When the Mortise Lockset Hold-Back Function Creates a Liability: What Facilities Miss About Trim Compatibility and Door Classification

Why Hold-Back on a Mortise Lockset Is a Problem Waiting to Happen This article is for facility managers, commercial contractors, and project architects who specify or maintain mortise locksets with a ...

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Aug 18, 2026

Delayed Egress Alarm Modules: What Specifiers and Facility Teams Get Wrong Before the Door Goes Live

What This Article Covers -- And Who It Helps Delayed egress alarm modules are one of the most misunderstood options in the exit device world. Specifiers order the wrong configuration. Facilities teams...

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Aug 17, 2026

ADA 2010 Door Hardware Compliance: The Specs That Actually Get Missed in the Field

What the 2010 ADA Standards Actually Require at the Door Opening The 2010 ADA Standards for Accessible Design govern how doors must perform for people with disabilities in commercial facilities and pl...

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Aug 17, 2026

Drywall Slip-On Frames vs. Welded Frames: Choosing the Right Hollow Metal Frame Before the Wall Goes Up

Why the Frame Type Decision Happens Earlier Than Most People Think This article is for commercial contractors, facility managers, and project architects who need to specify or order a hollow metal doo...

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Aug 17, 2026

Closer Body Crack vs. Valve Failure: How to Tell the Difference Before You Order a Replacement

Why Getting This Diagnosis Right Saves You a Second Trip This article helps contractors, facility managers, and maintenance technicians figure out whether a failing door closer needs a simple valve ad...

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Aug 17, 2026

The Classroom Lock Function Explained: Why Schools Keep Getting the Key Sequence Wrong

What This Article Covers and Who It Helps The classroom lock function is one of the most commonly misunderstood lockset configurations in commercial hardware. School facilities teams, general contract...

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Aug 17, 2026

304L vs. 316 Stainless Steel Hinges: Choosing the Right Grade Before the Building Envelope Matters

Why Stainless Steel Grade Is a Spec Decision, Not a Finish Decision This article helps contractors, facility managers, and architects understand when Type 304L stainless steel hinges are adequate for ...

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Aug 17, 2026

From Signal to Secured: How Emergency Lockdown Systems Actually Talk to Door Hardware

What This Article Covers and Who It Helps When a building triggers a lockdown -- whether at a K-12 school, a hospital campus, or a corporate facility -- the door hardware has to respond correctly, imm...

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Aug 16, 2026

Exit Only on Stair Tower Doors: Getting the Hardware Package Right the First Time

What This Article Covers and Who It Helps Stair tower doors are among the most frequently misspecified openings in commercial construction. They sit at the intersection of egress requirements, re-entr...

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Aug 16, 2026

Concealed Overhead Closers vs. Surface-Mounted Closers: Choosing the Right Fit Before the Door Goes In

What This Article Covers If you are scheduling closers for a new build or retrofit and the spec simply says "door closer," you are already behind the decision curve. Concealed overhead closers and sur...

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Aug 16, 2026

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