This 230-volt, rotary screw air compressor has a 120-gallon capacity and has a panel for easy access to internal components. It is tank-mounted and does not have a dryer. This high-performance 15-horsepower model is prewired and can be used in smaller areas or close to walls. This air compressor has a 100% duty cycle and has a decibel amplitude of 69 dBA at three feet. It has an automatic belt tensioning system as well as air end bearings which protect against slippage and improper tensioning.