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Protective Cabinets, Covers and Enclosures

Did You Know?
To construct wire guards we borrowed from nature’s master builder, the spider, creating a patented web of protection.

wire webs
Did You Know?
You can search for a cover based on the dimensions of the appliance you need protected!

Find a Cover
Did You Know?
Can’t hear your existing doorbell in your basement, garage, shed, etc. With wireless ease extend the chime to greater distances.

Extend Chime
Did You Know?
Stopper II has been helping stop false fire alarms for over 30 years.

Stopper II
Featured Product

STI-13800NK
Universal Stopper® without Horn Housing, Enclosed Back Box & European Sealed Mounting Plate, No Label

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About STI Protective Cabinets, Covers and Enclosures

Our range of lockable polycarbonate enclosures, bio protector covers and control panel enclosures are perfect for anti-vandalism and protection against accidental damage or the environment.

Strong and durable, all of our protective cabinets, covers and enclosures guard against both accidental and intentional physical damage.

The Stopper Line includes smoke detector covers and cages, heated cabinets, weatherproof enclosures, lockable polycarbonate enclosures and CCTV damage stoppers designed for anti-vandalism.