Heavy Duty Aluminium/ Mild Steel Reflex Horns require separate driver units for optimum results. These Reflex Horns are made of quality grade heavy duty aluminium or mild steel material that ensures long lasting usage. These Reflex Horns are available in 10”, 16”, 18”, 20”, 24”, 22”, 26” and 30” opening ranges. Heavy Duty Aluminium/ Mild Steel Reflex Horns have a rugged construction and are fitted with a protective PVC ring on the flare.