This Kidde MRI nonmagnetic dry chemical fire extinguisher has been tested in a 3 Tesla MR imaging system and poses no magnetic safety hazards. Suitable for use on all Class A (trash, wood and paper), B (liquids) and C (energized electrical equipment) fires as well. Easy-to-use with a gauge that tells you Fire Extinguisher is charged and ready for use. Easy-to-pull safety pin. Impact resistant nylon handle and valve assembly. Clean white powder-coated cylinder provides durability. 5 lb. of fire extinguishing agent. Wall hanger and screws included for your convenience. Compliance: ANSI Z87. ASTM 2503-05. UL rated 3-A:40-B:C. This product can only ship via UPS Ground.