ES Shutter Fan Diameter:16" (3 Speed, 1200/2050/2950 CFM) and can withstand snow

and can withstand snow

Neoprene custom size cover

LED lifespan: 50000 Hours

This unit can be mounted overhead

If you are only going to keep your greenhouse plastic on for one year

ES Shutter Fan Diameter:16" (3 Speed, 1200/2050/2950 CFM) and can withstand snowThe ES Shutter Fan is a durable agriculture grade exhaust fan perfect for barn and building peaks, greenhouses, warehouses, and more. ES Shutter Fans are available without a cord, or pre wired with a cord and plug for "No Electrician Required" installation. Fans ship fully assembled out of the box so you're up and running in no time! This exhaust fan is 115V, aluminum construction, and indoor outdoor. Available in 10, 12, 16, 20, 24 and 30 Comes fully