15 minutes. One screwdriver. Done. Most home cooling solutions require an electrician, a roofer, or both. Powered attic vents need wiring. Window AC units block your window. Even most "DIY" solar vents require complex mounting hardware and roof work. The Zula is sized to fit standard 21" × 14.5" garage door window cutouts and shed gable vents. You pop out the existing window or vent (4–8 screws, save them), drop the Zula in, screw it down, connect a single on/off switch wire. Walk outside. Done. We've watched first-time homeowners do this in 12 minutes. The solar panel takes over the second sun hits it. No app, no calibration, no maintenance. What's in the box Zula unit (21" × 14.5") — fits standard cutouts 75W polycrystalline solar panel On/off switch and wiring Mounting hardware Illustrated install guide Compatible with: Wayne Dalton 9100 Sonoma, Clopay, and most standard residential garage door brands.