Product review (3 stars): Just buy the parts from the hardware store.  You'll need to anyway.
This is more like a recirc starter kit.  There's just enough parts to get you started and the directions basically tell you that.  Nothing is long enough to get you out of the cabinet.  And the grill....?  seriously?  Who decided that pulling a floor vent out of somebody's trailer and packaging it with a custom hood recirc kit was a good idea?  I recommend looking at these parts and just buying what you need from the hardware store.  This basically gives you an elbow that blows the air at 90 degrees BUT STILL INSIDE YOUR CABINET.