Thanks. I was thinking 300 CFMs also, with a variable speed control to turn it down if necessary. I'm considering one of the fantech brand attic-mounted remote ventilators, with multiple inlet grilles mounted in the ceiling, for less noise.
I'm installing 6- 40 x 60 double hung windows, with outside screens. I figure I can open the bottoms and/or tops to get the kind of cross ventilation I need, depending on the wind direction and speed.
The room overlooks a small lake, and in the winter, if the winds are gusting, it can be quite brutal. If the windows are open on the tops, the wind should just blow right over us (we’ll see
) In the summer, that breeze is a welcome relief.