Eco-Mercari Delivery Greenhouse Ventilation Fan Greenhouse Air Conditioning Golden Star Family Fan 8170 Specifications This item was purchased over 10 years ago for a greenhouse in the courtyard. I didn't think there would be any problems since the courtyard shouldn't be affected by typhoons, but the greenhouse was destroyed in a typhoon one year, so this fan was left unused. It can be used to exhaust air from the greenhouse, and if installed in reverse, it can also bring in outside air. It is a type that is installed in a window frame. The acrylic plate is height-adjustable, but the adjustment screws are missing. The fan has been tested and is working. The box is included, although it's in rough shape. Acrylic plate Sizes (approx.) 400 x 145 mm 575 x 150 mm Thickness 3 mm PIKA Pica Pica Corporation Greenhouse Plants Orchids Agave Reptiles Small Animals Leopard Gecko Ball Python Insects For Home Greenhouses Ventilation Fan Set