Rated 2 out of
Interferes with stove hood vent gateWhen attached to a stove hood there is a gate that is supposed to swing open when the fan is on. The collar on the boot is so short that the gate hits the angled part of the boot when it is only about 20% open, preventing it from opening fully. Obviously, whatever CFM your stove hood fan is rated at is not realized as the gate doesn't open enough to allow full flow. Poor design somewhere along the way.