Your best choice for the science laboratory-ABC type fire extinguishers treat most types of fires and are easy to use! This dry ammonium phosphate extinguisher is under nitrogen pressure. Effective range is 20 feet. Provided with a pressure gauge to indicate extinguisher ready condition. A quick release valve lock helps to avoid accidental discharge -an important feature where students are present. The plastic discharge horn is at the end of a flexible hose. Complete with wall mounting bracket. The UL rating is 2A:10B:C for SE1034 and 4A:60B:C for SE3001. Can be recharged by any local fire protection company.