The 3-A: 40-B: C Heavy Duty Rechargeable Fire Extinguisher fights paper; wood; fabric; electrical; and flammable liquid fires. Its heavy duty metal head is designed to exceed demanding needs and can be recharged by a certified professional if used. Includes heavy duty wall mounting hook to keep unit secure. 12-year limited warranty. Meets UL standards. Features: UL rated type 3-A: 40-B: CRechargeableExceeds minimum 2-A: 10-B: C code requirementsFits easily inside standard fire boxCommercial-grade metal valve and triggerIdeal for offices; homes; and workshopsMonoammonium Phosphate extinguishing agent | First Alert 3-A:40-B:C Heavy Duty Rechargeable Fire Extinguisher