Safety Technology International, Inc. STI-9665 Beacon and Sounder Steel Wire Cage, Approx. 7" Width x 8.43" Depth Protects beacon and alarms from vandalism and accidental damage Constructed from heavy gauge steel wire with corrosion resistant Polyester coating Designed to not interfere with the operation of the protected unit Simple removal for servicing the detector Dimensions  7" W x 8.43" D