Product review (5 stars): Must read...
First off it comes with mesh filter, not with the much more expensive stainless baffels as shown. Second there is no blower. You have different options as to which blower type you choose. One is the internal type which mounts directly to the rectangle opening on the liner $375. The other is an inline type which places the fans farther from the unit to reduce noise but which requires different adapters like the 332KR rough in kit and depending on the blower you choose, reducers and or adapters to each side of your blower. There's also exterior blowers that mount onto an exterior wall of the house, this is not an option if you must exhaust through a roof.  I bought a 6 inch exhaust fan from a botanical supply and had a rough in kit made by a BBQ supplier for much cheaper than these conventional setups. See pictures.
  I am very happy with the quality and condition of the product.