Hi all.
After 8 months of getting up the nerve I finally drilled a 4.75" hole in my deck to install a Nicro Day/Night Solar Vent fan. I placed the fan between the main salon hatch and the mast. I did not want to install it in the hatch and cut down on the available sunlight. I have no pictures but installation was pretty straightforward. The recommended hole saw size of 4.75" is just a touch too small. It was necessary to use a file to widen the hole slightly. The metric hole saw size recommendation is 122mm which is 4.8". That is probably a more accurate measurement of the necessary hole size.
I can confirm that at least on my boat, nothing was run in the deck liner at that location.
Dave
Unplugged
Dave -
What power drill did you use for the hole saw?
Mike
I used a Rigid X2 Cordless. It was plenty strong enough. Deck is about 1-1/8" thick with a Foam Core. Cuts easily.