Mine says Air King. I bought 2 of them about 20 years ago from WW Grainger. My place is sort of U-shaped. My windows are sliders. When the hot season arrives, I put a fan in my LR and another in my office. I stand the fan in the window and hold it in place with a piece of plywood to block the space above the fan. I use one drywall screw on each side. The same holes for 20 years. I reverse the process in September or October. My bedroom is in the middle with an open window. About 9 PM, the day's heat has dropped to 80. When I go to bed, I set both fans for low speed exhaust. The replacement air is cool and welcome as it wafts over my bed. 3 or 4 hours later, I'm prompted to get up and go pee-pee. I then set the fans to blow in at medium speed. When I get up in the morning, I turn the fans off because the place is chilly.