Residential Security

MTL 800 by Mul-T-Lock | Best High-Security Lock in Naples FL

MTL 800 Key, Cylinder, and Key Card

MTL 800 by Mul-T-Lock: The Lock Naples, FL Homeowners Trust for Real Security

In a coastal city like Naples, FL—where luxury homes, vacation properties, and waterfront estates abound—homeowners can’t afford to rely on cheap, big-box store locks. When it comes to protecting what matters most, especially in seasonal homes that are vacant for weeks at a time, you need more than just convenience. You need verified, tested, high-security hardware built to withstand real-world threats.

That’s where the MTL™800 by Mul-T-Lock comes in.


Why Lock Grading Matters in Real-World Security

Locks are not all created equal. To help consumers navigate the sea of hardware options, independent testing agencies such as ANSI/BHMA and UL (Underwriters Laboratories) have developed performance-based grading systems.

Here’s a breakdown:

  • Grade 1: Highest level of durability; ideal for commercial or high-security residential use.

  • Grade 2: Mid-level durability; good for residential use.

  • Grade 3: Entry-level and easily bypassed—often used in budget installations.

But these grades mostly measure durability—not real break-in resistance.

If you’re serious about preventing bumping, picking, or drilling attacks, you need to look for the UL437 rating, the most demanding test a lock can undergo. It simulates skilled forced-entry attempts and certifies a lock’s resistance to high-level threats.


Meet the MTL 800: Certified Security for Florida Living

The MTL™800 by Mul-T-Lock is a UL437-certified high-security lock cylinder designed for both residential and commercial use. It’s built to outperform traditional locks in every measurable way:

Why We Recommend the MTL 800:

  • UL437 Rated – Resists drilling, picking, bumping, and more

  • Patented Key Control – Keys can only be duplicated by authorized dealers using a secure key card

  • High-Precision Mechanism – Built with Mul-T-Lock’s interactive+ telescopic pin technology

  • Scalable Installation – Works with deadbolts, handlesets, and door knobs from leading brands

  • Coastal-Grade Durability – Built to resist the salt, sand, and humidity of Southwest Florida


Why Naples Homes Need High-Security Locks

From Port Royal to Pelican Bay, many Naples homes have glass doors, lanai access points, and limited street visibility—making them targets for quiet, quick break-ins. Cheap locks (especially Grade 3 or uncertified imports) can be defeated in seconds with a credit card, a screwdriver, or even a bump key.

With the MTL 800, you’re not just locking your door—you’re actively deterring skilled intruders with a lock system that has been torture-tested by the world’s leading security laboratories.


Keep Your Style—Upgrade Your Security

One of the biggest concerns homeowners in Naples have is compromising style for security. Fortunately, with the MTL™800 by Mul-T-Lock, you don’t have to choose.

Many times, our locksmiths can retrofit the MTL 800 cylinder into your existing decorative hardware—whether it’s a Baldwin handleset, Emtek knob, or other high-end entry lock.

That means:

  • No need to replace your entire lockset

  • Your home’s beautiful entry aesthetic stays intact

  • You still get UL437-rated protection with advanced key control

Whether you live in a custom home in Aqualane Shores, a coastal condo, Golden Gate Estates, or an the golf course, we’ll make sure your upgraded security blends seamlessly with your architectural style.


Advanced Key Control: Say Goodbye to Unauthorized Copies

With traditional keys, anyone can take your key to a hardware store and make a copy. But not with the MTL 800. Every lock comes with a Mul-T-Lock key card, which is required to make authorized copies—only at certified Mul-T-Lock dealers like “A” Locksmith Naples.

Whether you’re a seasonal resident or renting out a property, this feature ensures only you control who has access.


Not Ready for High-Security Yet? Grade 1 & 2 Residential Locks Still Offer Great Protection

While the MTL 800 is our top recommendation for full-scale protection, we also install high-quality Grade 1 and Grade 2 locksets from trusted brands like:

  • Baldwin

  • Schlage

  • Emtek

Many of these locks include SmartLock features, beautiful coastal styles, and lifetime finishes—ideal for salty, humid Naples conditions.


Final Word: Don’t Let a Cheap Lock Compromise Your Safety

Naples homeowners are investing in beautiful homes—but often protecting them with the weakest link in the security chain: the front door lock. Don’t settle for a lock that only “looks” secure.

Instead, trust A Locksmith Naples—serving Collier County for over 50 years—to professionally install UL437-rated, high-security MTL 800 locks that deliver true peace of mind.