The Mont Solar Powered Ventilation System is designed to control the temperature in your greenhouse during the hot and cooler months. Most plants will not flower and fruit at temperatures over 85 degrees. To get them to flower temperature control is key. Our commercial fan, exhaust louvers, and commercial thermostat are all made in the USA and our solar panel can product more than 2 times the needed power to operate the fan at 100%, allowing for future options such as lighting and heating. The Mont Solar Ventilation System allows for off the grid operation, getting power to your greenhouse where you need it. The system is easily retrofitted to other non-Mont greenhouses as well. The system can easily be set-up to run through a deep cycle marine batter to allow for power on demand , with or without the suns power.Features PROUDLY DESIGNED & MADE IN THE USA!! -3 yr warranty 18 inch Commercial Ventilation Fan Aluminum 5 louvered fan cover Commercial thermostat 40 amp solar panel with mounting brackets Instructions for battery powerpack set-up Specification SKU #:  Mont-Solar Color:  Black & Aluminum Material:  Aluminum/Polycarbonate Size:  24 IN X 24 IN X 8 IN What's included / What's in the box?:  60 amp Solar Panel with brackets, DC powered ventilation fan ( 16"), Aluminum Louver system, hardware What's not included?:  Greenhouse Fabric Content:  N/A Care Instructions:  Warm soapy water Country of Origin:  USA POWER SUPPLY:  SOLAR If Uses Batteries - What Battery Type?:  N/A If Uses Batteries - Number of Batteries Needed:  N/A If Uses Batteries - Are batteries included? (Y or N):  N/A If Uses Batteries - Is a battery charger included?:  N/A Assembly Required (Y or N):  Y Product Length (IN) :  24 Product Height (IN) :  8 Product Weight (LB):  21 Height and/or Weight Capacity:  N/A Spout Height (IN):  N/A Spout Reach (IN):  N/A Flow Rate (gallons per minute):  N/A Warranty:  3 year limited warranty Ships in # of boxes:  2