This unit is a handcrafted 20" x 32" x 3.5", Forced Air Solar Window Heater. This heater simply sits in a south facing window sill inside your home, when the sun is bright the panel collects heat from the sun and gets very hot, 140-170 degrees. When the thermostat inside the panel detects a temperature of 120 degrees or more, the fan will automatically turn on which will draw room temperature air into and through the panel and return the warmer air into the room. When the panel cools to 90 or below the fan will shut off. The units interior is lined with high quality aluminum flashing that is painted in flat black urethane enamel to achieve maximum heat absorption, the unit is covered with 0.093" Plexiglass that is attached to the frame using (16) 3/4" flat head screws. There are two 25.5" baffles inside to create three air paths. The draw fan is a high quality 4.7" muffin fan that moves 130 cubic feet of air per minute, (130 cfm) or 7800 cubic feet of air per hour at 12 VDC. There is a junction box next to the draw fan that has a switch so that you may select automatic operation or turn on the fan when you want to. The power supply is a UL approved 12 volt, DC power unit, that plugs directly into the junction box and into your 120 VAC wall socket. The junction box has green and red LED lights that indicate when the unit has power (Green) and when the thermostat has engaged (Red). This unit will help lower your heating bill during the winter months. I live in Colorado and I used one of these units in my small 600 square foot apartment. On Cold Sunny days even when it was 25° outside, I was able to shut my gas heater off during the day and still keep the place at 74° to 82°using this panel. This is a completely pollution and virtally cost free way to heat your home, when the sun is shining of course. I hand build each of these units myself and test each unit before it is shipped. I also offer unlimited technical support and a 90 day warranty on the fan, thermostat and power supply. There is no warranty on the plexiglass or for labor to replace parts. UPS Shipping is included in the buy it now price. Canada orders will ship via USPS Airmail and should arrive 4-10 days from the shipping date..Payment is accepted via Visa, Master Card, American Express, Discover, PayPal, Money Order or Personal check. I can be reached at (303) 847-0119 for any questions. Thank You for looking and thinking about clean energy. This unit works best on sunny days close to the winter solstice, December 21st,  60 days before and 60 days after. Please allow up to 21 days for your unit to be shipped after payment is received. Personal checks are accepted with a 14 day clear time before shipping.