Electric Strike Sizing & Install
Lesson 7 of 10 · estimated 18 min · shadow-job required before certification
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Video · 4:12
Written guide · 12 min
Quiz · 5 questions
Shadow-job required
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Electric Strike Install · CRL training video
Why sizing matters
An electric strike that's 1/16" off on either axis will either bind (customer callback) or not latch (life-safety failure). You cannot eyeball this — every strike install starts with measuring the door prep, the frame prep, and the throw of the existing lockset.
The measurement checklist
- Door thickness at the prep point (not the edge)
- Latch/deadbolt throw — actual, not spec
- Frame stop depth + backset
- Existing strike cutout dimensions if reusing
- Frame type (hollow metal vs aluminum vs wood)
Watch out
HES 9600 and HES 9800 look identical in the catalog but differ by 1/8" on the faceplate. Always verify the part number printed on the strike itself, not just the box.
Vendor references
HES 9600 Series Spec Sheet
HES · spec-sheet
Adams Rite 7400 Install Guide
Adams Rite · install-guide
Knowledge Base · Electric Strike Sizing article
required reading
Knowledge check
Pass with 4 of 5 correct to advance. You can retake.
1. A HES 9600 is rated for what door thickness?
+ 4 more questions
Shadow-job sign-off
Before this track is complete, a senior tech must sign off on a live electric-strike install. This ensures real-world application, not just book knowledge.
RP
Rico Park
Senior tech · sign-off eligible
Streak
12 days
🔥 Longest streak: 18 days
Track · What you'll earn
Commercial Hardware L2 certification badge
Unlocks Tier 3 commission on commercial jobs
Access to Fire-rated Hardware track