Mul-T-Lock
Downtown Door Repair & Security installs and services Mul-T-Lock high-security hardware — pick-resistant cylinders, interchangeable-core systems, and patented key control that stops unauthorized key duplication at the hardware store. We stock Mul-T-Lock hardware and carry it on the truck for same-visit installs and rekeys.
What we service
- High-security cylinder installation and upgrades for existing doors
- Rekeying to Mul-T-Lock so old keys stop working immediately
- Interchangeable-core (IC) systems for buildings that rekey often
- Restricted key control — keys that can't be copied without authorization
How pricing works
Every Mul-T-Lock job is priced after an on-site diagnosis — no guesswork and no surprises. We diagnose what's needed, explain your options in plain language, and give you clear pricing before any work begins.
Request your on-site quote
Tell us what's going on — we'll get back to you with next steps and honest pricing.
Frequently asked
What makes Mul-T-Lock different from a standard deadbolt cylinder?
Mul-T-Lock cylinders use a patented key design that's far harder to pick or bump than a standard pin-tumbler lock, and the keys can't be duplicated at a regular hardware store without authorization — so you control who's able to get a copy.
Can you upgrade my existing door to Mul-T-Lock without replacing the whole lock?
In most cases yes — we can swap just the cylinder to a Mul-T-Lock high-security cylinder if your existing hardware supports it, which is faster and cheaper than a full lock replacement.
Need it handled today?
Call for same-day service across the five boroughs, or send a few details and we'll get right back to you.