When commercial productivity counts, these units are our most popular contractor and municipal machines. They respectively feature a 25 HP or 35 HP V-Twin engine coupled to our largest 18" or 20", 6-blade, armor plated impeller with 18 cutting points and dual shredding Piranha™ technology for up to 12:1 reduction and 5,050 cfm of suction power. For durability, the units also feature a convenient replaceable poly liner in the housing. A large 12" x 10' clear poly helical hose on the 25 HP and a 14" x 10' hose on the 35 HP is ideal for taking huge bites out of any debris pile and the exhaust features a no tool, no thread 360 degree unique rotational exhaust that is hand adjustable.