Festool 578441 CT 15 E HEPAFunctions Cleaning construction sites, production shops and home workshops. With a 3. 96 gallon (15 L) container volume, the CLEANTEC CT 15 extracts dust, dirt, and water. Its design ensures that almost the entire container volume can be used for long periods of work without having to change the filter bag. Ideal for use on the go thanks to compact dimensions, low weight, and robust chassis Touch operation for intuitive control of the mobile dust