One Lock. One Key. Total Control.
The WEATHER GUARD® 1KEY ULTRALOCK™ is the ultimate truck toolbox lock system for contractors, tradespeople, and fleet managers who demand speed, security, and simplicity. With one key for every truck box in your fleet, you eliminate the hassle of juggling multiple keys while keeping your tools and equipment protected. The 1KEY ULTRALOCK features a visible lock status indicator, heavy-duty reinforced construction, and smooth-action access built into WEATHER GUARD’s toughest truck boxes — including saddle boxes, chests, lo-side boxes, wheel well boxes, and gull wing boxes. Whether you manage one truck or a hundred, 1KEY ULTRALOCK saves time, reduces risk, and delivers unmatched convenience on the jobsite.
Why Pros Choose 1KEY ULTRALOCK™
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Key Alike Fleet-Wide
One key for every box in your fleet. Secure and convenient.
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Instant Lock Status Check
See at a glance if your box is secure.
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Built WEATHER GUARD® Tough
Heavy-duty, reinforced locking.
Shop Truck Storage with 1KEY ULTRALOCK™
Frequently Asked Questions about 1KEY ULTRALOCK™
What is the WEATHER GUARD® 1KEY ULTRALOCK?
The WEATHER GUARD 1KEY ULTRALOCK™ is a one-key system that works across all your truck boxes. It eliminates the hassle of multiple keys, saves time, and lets you check lock status instantly with a built-in visual indicator — all backed by WEATHER GUARD’s heavy-duty security.
Why should I choose 1KEY ULTRALOCK™?
1KEY ULTRALOCK gives you fleet-wide keyed-alike convenience, reinforced pro-grade security, and quick access to your gear. It’s built to help contractors, tradespeople, and fleet managers work faster, safer, and smarter.
Which WEATHER GUARD truck boxes come with 1KEY ULTRALOCK?
1KEY ULTRALOCK is available on most truck box styles — including saddle boxes, all-purpose chests, lo-side boxes, wheel well boxes, PACK RATS and gull wing boxes — all engineered for professional durability and protection.
How does the lock status indicator work?
The 1KEY ULTRALOCK has a button, that when depressed, shows that your truck box is locked. You can confirm security at a glance without testing the handle.
Can I purchase replacement keys online?
Yes. WEATHER GUARD has formed a partnership with Simply Keys to enable our customers to easily and conveniently purchase replacement keys online! Please remember, in order to purchase replacement keys you must know your key code and which type of box do you have (Saddle, Lo-Side, Hi-Side, Pork Chop Box, All-Purpose Chest or PACK RATS). Without a key code it may be necessary to replace the lock. One of the benefits of registering your products with us is that we can have your key codes ready when you need them and save you the expense of replacing your locks due to lost keys.






