Constructed of 9 gauge galvanised steel, and finished with a durable white plastic coating. Will not rust. Suitable for indoor and outdoor locations. Two size options will fit most sounders. Model STI9615 has an internal diameter of 95mm and a depth of 90mm. The STI9617 has an internal diameter of 150mm and a depth of 145mm.
Easy to install with the included fixing kit. Part of a complete line of stopper products by STI. Please call for details on stoppers designed to protect detectors, emergency lights, motion sensors, clocks, cameras, fluorescent lighting and more.