We are the Experts

You can count on us for support and service after the sale!

If you prefer to talk with an Expert, we're just a phone call away at 800-328-8996.


Guard Sizing Chart

Use our guard sizing chart to find the guard you need using the dimensions and shape of the product you want to protect.


Read about our Shipping and Handling terms and payment options. 


We stand behind our products. If for any reason you are dissatisfied with your product, please follow our return guidelines to ensure prompt customer service.

Terms and Conditions

We are pleased to do business with you! Learn about our general terms and download the most commonly used forms.

STI Resources

STI guards have been helping to stop false fire alarms for more than 30 years, without restricting legitimate alarms.