The Heng reduces the amount of light that comes in through the vent since it is a retrofit. One thing to consider.
That's a good thought, didn't think about that. Luckily mine has a shower skylight too so hope that's enough natural light. I'd definitely take the exhaust fan though over the daylight.
__________________
'14 Sunset Trail 290QB
Towed by a '15 Ram 2500 6.4 Hemi 4x4 CC
Equalizer 1200/12K (just because I still have it)