ES Shutter Fan Diameter:16" (3 Speed, 1200/2050/2950 CFM) Self-tapping channel wirelock screws are

Self-tapping channel wirelock screws are needed for securing channel base to the greenhouse frame

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

LED lifespan: 50000 Hours

Teflon tape

A single 120-240 volt “trigger” cable on the 4RS-1 connects to your device / control module

ES Shutter Fan Diameter:16" (3 Speed, 1200/2050/2950 CFM) Self-tapping channel wirelock screws areThe 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