Amerex’s REGULATED PRESSURE WHEELED FIRE EXTINGUISHERS feature a 110 cu ft. nitrogen cylinder with a pressure regulator and 2 1/2" x 36" steel wheels. Their traditional design allows for adequate pressure to ensure a smooth, complete discharge of the dry chemical, with pressure reserve for blowing down the discharge hose. Easy to transport and operate by one person. USCG approved. Call the Sales Department for quantity pricing.