Ensure smoke alarms are protected from vandalism and accidental damage with a steel smoke alarm cover from STI. A fire brigade fee for response to false alarms has become common practice in many areas. Help reduce the incidence of false responses by covering alarms in high-traffic and public locations. Constructed of 9 gauge galvanised steel and coated with white plastic. Suitable for both indoor and outdoor locations. Will not rust. Does not interfere with operation of smoke alarm. For flush-mounted alarms order the STI9601. For trunking mounted alarms order the STI9602. Fixing kit for easy installation included. Removes quickly for routine maintenance. The STI9601 covers an alarm with an internal diameter a minimum of 150mm, and a maximum of 210mm. Depth is 70mm. The STI9602 covers an alarm with an internal diameter a minimum of 155mm, and a maximum of 215mm. Depth is 108mm. Please phone to inquire about the entire line of STI stopper products for protection of clocks, cameras, lights and other fixtures.