This super tough cover is designed to provide maximum protection against physical damage (both accidental and intentional), dust, grime and damage from severe environments indoors and out. The STI-1229 is for smaller strobe units of the new generation of fire signal appliances. It is a weatherproof cover for surface mount applications which can be used in wet or hose down areas (such as kitchens, cafeterias, meat packaging plants, showers, outdoors, etc.).