How to remove the fantastic fan casing?
We just purchased a New Rockwood Roo 233s and I was told that we should get a maxair vent cover. The salesmen told me that it only requires a few screws to install the maxair vent cover. When I went to install the vent cover, I could not figure out how to remove the fan and the inner casing to drill holes into the frame. My question is how do you remove the inner casing of the actual fan so you can drill holes into the frame? Please explain detail by detail. Thanks in advance!