Heavy duty adjustable fire extinguisher bracket designed for a wide variety of industrial vehicle, shipboard, offshore, military and emergency response applications. Brackets tested and approved to not only pass applicable UL/ULC/USCG requirements, but additionally meet various special military shock and vibration exposure requirements. Ideal for use in emergency response vehicles, off road construction equipment and airborne applications. Design provides added extinguisher security and extended field service life cycles under some of the most extreme environmental exposure conditions. Tested to pass 240 hours of salt spray exposure to meet industry requirements.