The RedMax EBZ5150 is economical and feature packed. Making the EBZ5150 a perfect mid-range back pack blower to use. The 50.2cc Strato Charged two cycle engine has very good power. The air volume is 664 cubic feet per minute, with an air speed of 163 mile per hour. The RedMax EBZ5001 only weights 20.3 pounds which makes blower very easy on your back. The EBZ5150 pack pack blower has a 2 year commerical and 2 year home owner warranty.