The Waste King 1000-1 Commercial garbage disposal unit is dual voltage and can run off 110-120 or 220-240 volts. The powerful 1 Horsepower motor allows it to power through difficult food waste from school cafeterias, hospitals, clinics, or small to medium restaurants. Stainless Steel Swivel Impellers swivel and retract if they encounter a jammed object. Impellers return to the grinding position during revolution instead of jamming the turntable, reducing motor overloading and costly jams. Waste King’s stainless steel swivel impellers eliminate the need for reversing switches and special “de-jamming” wrenches. Stainless Steel Under Cutter Blade located beneath the grind ring, cuts fibrous and stringy waste into small particles making them less likely to clog drain lines. Hush-Cushions isolate the unit from metal to metal contact, significantly reducing noise level. Hush-Cushions are specially designed to withstand vibration and tension, and have a built-in safety splash guard.