Federal Signal WB Weatherproof Back Box Housing Accessory, Gray 819175001060 Each comes tuned for its

Each comes tuned for its specific mounting location so no calibration is needed

The switches and housing are constructed of durable nylon for a long life and the terminals are made of copper alloy and/or silver plated copper alloy

Control Arm Bushing

Brand Fel-Pro Model SS 70070

Federal Signal WB Weatherproof Back Box Housing Accessory, Gray 819175001060 Each comes tuned for itsBrand Federal Signal Model WB Cast aluminum neoprene gasketed weatherproof housing For outside use For use with Federal Signal 350 Vibratone Horns Cast aluminum neoprene gasketed weatherproof housing for outside use complete with mounting lugs; tapped for 1 2" 3 4" conduit; 4 3 8" square box; 2" deep mounting lugs on 4 1 2" centers.