A: No it doesn't come with a power cord. Have to make your own or use one off an old appliance or power tool. Very easy to wire.
A: No, the exhaust fan does not come with a plug on the electrical cord.
A: The product frame dimensions are Depth 5.75 in, Height 33 in and Width 33 in.
A: This model should be installed with an external thermostat.
A: This fan needs t be installed inside a wall.
A: Yes, this exhaust fan will meet your needs.
A: Yes, this fan should be more than sufficient for a greenhouse of that size.
A: Yes you can air flow upward ,protect from rain entering in it
A: I would not. The shutter is not completely water tight. You would have leakage issues.
A: you can only use this fan to exhaust fan out.
A: No, I don’t, unless the vanes are mechanically controlled. It appears if the rotation is reversed the vanes would close.
A: I do not see why it would not work under a house.
A: yes, it will work under a house vent.
A: Personally, I can't see a reason that it could not be installed in the horizontal position. Bear in mind though that you would have some leaks in it when rains unless you put some type of cover over it.
A: No, the fan needs to be installed vertically.
A: A complete installation guide can be viewed via a link on the right-hand side of the product page in order to help you determine if this product will suit your project needs.