Will a smart lock fit your door?
Enter your door's material, thickness, existing prep, backset and handing — and see which smart-lock form factors fit, which won't and why, plus what to measure before you buy. Indicative India 2026 guidance; confirm against the lock's spec sheet.
Your door
Typical Indian doors 35–45 mm; uPVC 60–80 mm.
Edge → spindle. Often 60/70.
Frame face — slim on glass/alu.
Easiest to machine — mortise, deadbolt and rim all routable. Compatibility is a guide — always check the chosen lock's datasheet for accepted thickness, backset and door materials before ordering.
Best-fit smart-lock type
Deadbolt retrofit
Fit score 0/100
Fit score per form factor. Green fits, amber needs checks, red won't fit as specified.
Form-factor compatibility
What fits your wood / engineered door — and exactly why or why not.
Deadbolt retrofit
FitsReplaces an existing deadbolt; keeps your interior thumb-turn area. Easiest DIY.
- You have a mortise pocket — a mortise smart lock reuses it best; others may need re-prep.
Mortise smart lock
FitsDrops into a routed mortise pocket with a latch + deadbolt; the India default for main doors.
Rim (surface) lock
FitsBolts onto the inside face; minimal door machining. Common on glass and odd doors.
- You have a mortise pocket — a mortise smart lock reuses it best; others may need re-prep.
Narrow-stile lock
FitsSlim body for thin aluminium/glass-frame stiles. Needs adequate stile width.
- You have a mortise pocket — a mortise smart lock reuses it best; others may need re-prep.
Measure / confirm before you order
- Whether the lock kit lists your door material (esp. uPVC/aluminium/glass).
Pick the right smart lock for this door
DesignAI takes your door's material, thickness and prep and recommends a specific smart-lock form factor and brand — and flags what your installer must confirm.
Assumptions. Fit scores use typical smart-lock fitment windows for the Indian market — door thickness, backset (edge to spindle centre), stile face width and existing machining. Real products vary; the only authority is the chosen lock's datasheet and a physical site measure.
This is a guidance tool, not a fitment guarantee. Smart-lock hardware is indicative — get a quote from an integrator or electrician, and have them confirm fitment on the actual door. Where you add any electric strike or maglock, isolate power before work, and remember access-controlled doors on escape routes need free egress and fire-alarm release per NBC. Smart-lock hardware prices, where shown elsewhere, attract 18% GST.
Related Guides — Deep-dive reading
Smart Lock Installation India 2026: Retrofit DIY Guide
A step-by-step homeowner's guide to checking compatibility, fitting, aligning, calibrating and pairing a retrofit smart lock on an Indian door.
Home Doors & EntrancesChoosing a Smart Lock in India: Buyer's Guide (India 2026)
A practical decision framework to match a smart lock to your door, your unlock habits, your connectivity and your budget.
Home Doors & EntrancesDoor Lock Replacement: DIY Step-by-Step Guide India 2026
Identify your lock type, measure backset and door thickness, then remove, fit and align a new lock yourself — with tools and ₹ costs.
Home Doors & EntrancesRelated Tools — You may also find these useful
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