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45 Articles

door hardware specification ×

SDI Door Categories A Through E Explained: What Each Label Means Before You Spec a Hollow Metal Door

What This Article Covers If you specify, purchase, or install hollow metal doors, the Steel Door Institute (SDI) category system controls which door type belongs in which opening. Categories A through...

ANSI A250.8 SDI standards door hardware specification hollow metal doors steel door specification

Nov 7, 2026 Our Blog

Four Hinges on a Standard-Height Door: The Scenarios Where the Extra Leaf Earns Its Keep

The Short Answer: Three Hinges Cover Most Doors, But Not Every Door This article is for contractors, facility managers, and specifiers who run into situations where a standard three-hinge layout is no...

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Nov 4, 2026 Our Blog

Steel, Aluminum, or Vinyl? Choosing the Right Edge Band Material for Wood Commercial Doors

What This Article Covers -- and Who Should Read It If you specify, install, or maintain wood doors in commercial buildings -- schools, healthcare facilities, retail spaces, or industrial corridors -- ...

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Oct 11, 2026 Our Blog

No Cylinder Override on a Fail Secure Mortise Lock: Why Some Openings Are Specified That Way on Purpose

What This Article Covers This guide explains why a fail secure electrified mortise lockset is sometimes ordered without a cylinder override on the outside lever — and why that is a deliberate specific...

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Oct 9, 2026 Our Blog

Raised Barrel Hinges on Offset Frames: Why the Frame Reveal Drives the Hinge Decision

When the Frame Reveal Becomes the Hardware Problem This article explains what raised barrel hinges are, when deep or offset frame conditions require them, and what specifiers and installers need to co...

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Sep 17, 2026 Our Blog

Olive Knuckle Hinges on Residential Entry Conversions: What Changes When You Upgrade the Look

What This Article Covers and Who It Helps If you are replacing standard butt hinges on a residential entry door with olive knuckle hinges for an architectural upgrade, this guide explains the specific...

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Sep 15, 2026 Our Blog

Mortise Lockset Installation in Wood Doors: What Has to Go Right Before the Pocket Is Cut

Why Wood Door Mortise Installs Go Wrong Before the Lock Even Ships This guide is for commercial installers, school facilities crews, and maintenance teams who are cutting mortise lockset pockets into ...

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Sep 13, 2026 Our Blog

Frame Strike Preparation: What the Hollow Metal Frame Has to Be Ready For Before Hardware Ships

Why Frame Strike Preparation Is a Decision, Not a Default This article is for commercial contractors, door frame suppliers, and facility managers who need to understand how strike preparations are spe...

ANSI strike prep door hardware specification electric strike installation frame strike preparation hollow metal frames

Sep 1, 2026 Our Blog

Finish Lead Times Are Costing Your School Project: How Classroom Mortise Lock Specs Create Schedule Risk

The Finish Field on Your Hardware Schedule Is a Schedule Risk in Disguise This article is for school construction project managers, commercial hardware contractors, and specifying architects who manag...

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Aug 28, 2026 Our Blog

When a Passage Mortise Latchset Goes Into the Wrong Opening: Matching Function to Door Reality

What This Guide Covers and Who It Helps A Grade 1 passage mortise latchset is one of the most straightforward pieces of hardware in a commercial building — until it ends up on the wrong door. This gui...

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Aug 27, 2026 Our Blog

Passage vs. Closet Function: Why the Wrong Mortise Latchset Choice Causes Problems You Won't Find Until Move-In Day

Why This Decision Matters More Than the Spec Sheet Suggests This article is for commercial contractors, facility managers, and architects who specify or install interior door hardware. If you have eve...

Grade 1 commercial hardware closet function door hardware specification mortise latchset passage function

Aug 26, 2026 Our Blog

Plain Bearing vs. Ball Bearing Hinges: Why the Wrong Choice Follows You Through the Life of the Door

The Decision Nobody Thinks About Until Something Goes Wrong Plain bearing and ball bearing hinges look nearly identical in a catalog photo. They arrive in the same ANSI sizes, carry the same knuckle c...

ANSI BHMA commercial door hardware door hardware specification facility maintenance hinges

Aug 20, 2026 Our Blog

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