Greenhouse Aluminum Intake Shutter Size:12" and entirely soluble composition make

and entirely soluble composition make Tundra ideal for use both indoors and out in all types of irrigation systems

it is recommended by top horticultural experts and ideal for a wide range of plants

1 × Fan Speed Controller

Xylene Technical Grade

*The following claims have not been tested and certified by NSF: compatibility claims

Greenhouse Aluminum Intake Shutter Size:12" and entirely soluble composition makeFresh Air Intake for Greenhouse or Hoop House Bring outside air into your greenhouse with this intake shutter. Aluminum shutters open with negative pressure as outdoor air is drawn in through the shutter, and hot air is exhausted through a motorized shutter fan on opposite sides of the hoop house. This shutter is designed for easy installation with spring wire and lock channel and this hardware kit. Check out this article on greenhouse ventilation to