Wondering what recommendations for an exhaust fan with my Resor 45,000 separate combustion unit should have for my garage is approximately 24 x 24 double car garage. Only one garage door with one window reznor unit is at the Southeast corner the Garage., Street West is the garage door then straight north is the small win dow

The best recommendation depends on how the garage will be used. If it's primarily for parking and occasional hobbies, an 18" direct-drive shutter exhaust fan is typically a great option. If the garage is used more frequently for activities like welding, painting, or other projects that generate heat or fumes, a 24" direct-drive shutter exhaust fan would generally be the better choice. If you can give us a call to discuss how they use the space and what they're looking to accomplish, we'd be happy to recommend the exact unit that best fits their application.