Product review (4 stars): Almost perfect, except for.....
I bought this to replace a 20 year old 42 inch hood fan that was on it's last leg. This came with both a round connector and rectangular ( with damper built in ). The homes electric wire was easily run in from the top/rear of the hood fan and I only had to kill the power for 1 min to hook it up. I am however very displeased with the plastic cover you have to install if not using the recirculation option. The plastic piece barely stays in on its own and I had to secure it with double sided tape so that the exhaust would not escape back into the kitchen. The dual fan speed is perfect and the light works great as well.