The direct-Drive BLADE Series combines the best features of Mattei’s legendary direct-drive “bearingless” air compressors and blends it with the best of the BLADE belt-drive compressors in creating a new industrial class product at a great price. Featuring quiet (as low as 67 dB(A)) cabinet enclosures, electronic controllers, energy saving soft-start Wye-Delta motor starters, premium efficiency TEFC motors, air-cooled aftercoolers and optional heater kit for low ambient (down to +14°F) temperature protection to protect against freezing, they are available from 20 to 30 HP in 208, 230, 460, 575v.