Description Overview 6 inch Davis Standard 34:1 extruder Year 2004 Vented (2 vents) extruder Set up for water cooling Specifications 400 hp with gearbox rated for 500 hp 8 zones - 2 vents, one plugged (the company only used one vent) with vacuum The company only ran pp Screw diameter: 6 inchesMaterial processed: PP (Polypropylene)