The blower is a 5 HP chipper/shredder but it creates enough draft it works good as a fan and chops the leaves even finer. I had to take the grate bar out as it reduced the draft too much. TSC wanted $1200 for the same thing. I paid $75 for the chipper and $ 128 for the hose, everything else I had available. Got a lot of hours into it, but being retired I don't count them. I just thought I can build the same thing for a whole lot less.
One thing I have found out is I can't chip limbs and send them thru the discharge hose. Punches holes in the hose so I just remove the hose, open the tail gate on the tlr and blow them in the tlr.