Chase Security Systems Inc.
Perforated Metal Guards
Chase perforated guards are used in federal prisons, HUD projects, rehabilitation centers, hotels, hospitals, universities, factories, etc. to prevent costly false alarms, malfunctions due to vandalism. Constructed of heavy duty perforated steel, these strong yet attractive guards are designed to fit products from all the leading manufacturers of smoke alarms, speakers, thermostats, etc. Other options include electrical knockouts, mounting hinges and key locks. Install over existing or newly constructed systems. Guards are available in white powder coat finish.
http://www.chasesec.com