Exhaust Fan or Roof Vent?
I'm building a 12x12 greenhouse. I'm putting in a 24" exhaust fan in the gable opposite to the two 16" shutters next to the door. I'm building this thing based on my own plans:
(the plans have changed a bit to make the roof higher to accommodate the larger exhaust fan)
Here's the big question:
Do I need roof vents if I have a thermostat controlled exhaust fan?
I only have access to corrugated poly panels. I'd love to get the twin-wall poly if only to make vent construction easier. I just can't figure out the construction of the vents.
Any close-up photos of vents made with corrugated panels would be GREATLY appreciated. I guess I'm looking for an excuse not to put them in if I don't know how to build them.