The Grizzly PRO T32337 20-Gallon Oil-Free Quiet Series Air Compressor is the perfect compressor for your shop. It is compact, portable, low maintenance and unbelievably quiet.The 20-gallon compressor can do everything a smaller portable can, but with 5-10 times the capacity, is better suited for larger jobs that require more air. Think of this as the large stationary jobsite compressor that can feed multiple framing or roofing nailers at the same time.The T32337 has an operational sound rating between 60 and 72 dB. You will hardly even notice it is running because it is quieter than normal conversation. 60 dB is only slightly louder than a typical household refrigerator.Compare this with a normal compressor sound rating of 90 dB, which is about equal to a lawnmower. It's hard to describe just how striking the difference is.The 2-1/2 HP motor operates with a cut-out pressure of 150 PSI and delivers 5.6 SCFM at 90 PSI and 6.2 SCFM at 40 PSI.The oil-free double piston pump design provides four times the life of most oil-free compressors, making for cleaner air emissions and lower maintenance costs as well. It also reduces the time taken for the tank to reach maximum pressure vs a single piston.The T32337 features an easy-access and damage-protected control panel that is built into a removeable roll cage that protects the motor. The panel houses the dual quick connects, tank pressure gauge, output pressure gauge and regulator adjustment.