What are the Best Locks to Use for Self-Storage?

Your storage unit is only as secure as the lock you put on it. Even at a top-tier facility, the lock you choose serves as your final line of defense. The best protection comes from pairing a secure property with a high-quality lock.

At Garber Self Storage, we've made sure the first part is covered. Our facility is completely fenced and gated, brightly lit, and monitored around the clock by motion-detected cameras. However, we also make securing your unit simple and affordable by offering access to self-storage locks, eliminating the need to source one elsewhere.



In this guide, we'll walk you through the most common types of self-storage locks, which ones to avoid, and how to choose the right one for your needs.

The Three Most Common Types of Self-Storage Locks

When it comes to securing your storage unit, not all locks are created equal. The right choice can mean the difference between a quick break-in and a thief walking away empty-handed.

While there are countless lock designs on the market, three stand out as the most common (and most effective) for self-storage security. Let's break them down so you can choose the one that best fits your needs.

Disc Locks

If there's one lock style that dominates the self-storage world, it's the disc lock. Designed with a round body and a shrouded shackle, these locks leave very little metal exposed. This makes it nearly impossible for bolt cutters to get a grip.

Built from heavy-duty stainless steel and often equipped with anti-pick pins, disc locks are engineered to resist hammers, drills, and tampering attempts. That level of durability is exactly why many storage facilities (and even insurance companies) prefer them.

They're especially well-suited for outdoor units, where they can withstand harsh weather without compromising security. While disc locks can cost a bit more than basic padlocks, the peace of mind they provide is hard to beat.

Cylinder Locks

Cylinder locks take protection to another level by integrating directly into the storage unit door. Because the locking mechanism is housed inside, there's nothing for a thief to cut. These locks are drill-proof, pick-resistant, and designed to keep high-value items safe.

Many top-tier facilities replace the cylinder for each new tenant, ensuring no one has a duplicate key from a previous rental. The trade-off with cylinder locks is that not all units are compatible with this type of lock, meaning you may need to purchase a different style to secure your unit.

Closed-Shackle Padlocks

A closed-shackle padlock looks like a standard padlock's tougher cousin. The shackle is short, thick, and shielded by a protective casing. These features make it far harder for bolt cutters to penetrate.

While not quite as secure as disc or cylinder locks, they offer solid protection at a more budget-friendly price. For those seeking to balance affordability with security, a closed-shackle padlock may be a smart pick.

Locks to Avoid

Not every lock is up to the challenge of protecting your belongings. Combination locks and bargain-bin padlocks may look fine at first glance, but they're easily picked, cut, or even re-keyed by someone with the right tools. In the end, saving a few dollars on a low-quality lock could cost you far more if it fails when you need it most.

Choosing the Right Lock for Your Needs

The "best" lock isn't the same for everyone. It depends on where your unit is located, what you're storing, and how much security you want.



• Consider the location of your unit. If you have an outdoor unit, opt for brass or a brass alloy to resist rust and corrosion over time. For indoor units, hardened stainless steel is a top choice because it offers exceptional strength without concern for weather-related wear.
• Examine the lock's security features. A strong option will have a shackle that's at least 3/8" thick, a locking mechanism with 5–7 pins, and a solid all-metal body. Look for bonuses like weatherproof coatings, anti-drill technology, or boron carbide construction for maximum cut resistance.
• Make sure it's compatible with your unit. Before you buy, check with your storage facility to make sure the lock will fit the latch and meet any size requirements. Compatibility is an easy detail to overlook, but it's critical to security. Many facilities will have locks on offer, so you can opt for their selection if you want a guaranteed fit.
• Pay attention to weight. In most cases, a heavier lock means denser, stronger metals that are harder to compromise.
  

How to Properly Lock Your Storage Unit

Even the strongest lock won't protect your belongings if your unit isn't secured correctly. Start by closing the unit door fully. If needed, press down to make sure it seals at the bottom. Slide the latch across, insert your lock into the latch opening, and click it shut. Give it a firm tug to confirm it's fully engaged. This quick check can prevent a costly oversight.



For added peace of mind, pair good locking habits with smart storage strategies. Keep valuables toward the back of the unit and avoid labeling boxes with descriptions that might tempt a thief if they were to get access. Together, these steps make your storage space harder to target and easier to protect.