This low noise (<58dB) air source is an ideal accessory for air tracks, air tables, and other pneumatic equipment in physics labs. The 250W motor produces a clean air output with a flow rate of 35 m3/hour at a 0.70 kPa overpressure. Additional Info: This low noise (<58db) air source is an ideal accessory for air tracks, air tables, and other pneumatic equipment in physics labs. The 250w motor produces a clean air output with a flow rate of 35 m3/hour at a 0.70 kpa overpressure. Package Size(L x W x H): 10 X 10 X 18 (IN) Categories: Waves, Tuning Forks HTS Code: 8412.39.0080 UNSPSC: 4.01016e+007 Country Of Origin: CHINA