4-cylinder compressor with membrane dryer and 2 units. Supplies compressed air required for dental treatments that meets strict hygiene requirements. 50L tank can work with 1 or 2 units, making it suitable for up to 4-5 users. High-quality, robust and durable, and almost completely maintenance-free. Dimensions: (H)76 x (W)79 x (D)52cm. 69dB maximum noise level. Requires an engineer to fit and yearly filter changes. Includes Durr Pressure Reducer and Installation Kit, plus installation. Pressure vessel inspection test can be arranged separately if required.