ULTRA QUIET PERFORMANCE: The California Air Tools 4.0 HP Ultra Quiet & Oil-Free Air Compressor operates at only 75 decibels, making it one of the quietest air compressors in the industry. Perfect for noise-sensitive environments. Airflow is 12.80 CFM at 40 PSI and 10.60 CFM at 90 PSI. POWERFUL TWIN MOTORS: Equipped with twin 2.0 HP motors running at only 1680 RPM, this ultra quiet air compressor creates less noise and wear. The SP Series motors are designed for increased duty cycle and longer continuous run times. OIL-FREE DUAL PISTON PUMP: The oil-free dual piston pump system provides high performance and durability, with a life cycle of over 3000 hours. Suitable for various temperatures and terrains, it ensures cleaner air and less maintenance. 80% AIR DRYER AND AFTERCOOLER - The integrated 80% air dryer in this heavy duty portable air compressor removes most of the water vapor. The aftercooler cools the discharge air, condensing water vapor into liquid form. The 60-gallon steel ASME air tank is perfect for shop or garage use, offering ample air capacity. AUTO DRAIN VALVE: Factory installed, the EZ-1 Automatic Drain Valve eliminates the need for manual draining. The pre-set timer allows you to set the frequency and duration of the draining process, ensuring hassle-free maintenance. Product dimensions – L (25.5") x W/D (29") x H (66.5").