Significantly quieter than other air sources, yet powerful enough to easily float fully-loaded gliders, this compact and economical air source is a technical breakthrough. In operation, the sound level does not exceed that of quiet conversation. Supplied with a 1.5m long, 3cm diameter air hose for use with the CP33886-00 Student Precision Air Track and a 4cm hose adapter to fit other Air Tracks and Tables. Use the optional CP36855-00 Dual Track Accessory to operate two units simultaneously. For 110VAC. Dimensions: 21cm diameter, 35cm high.