The MaxxAir FanMate Vent Cover is recommended for high-powered fans and non-powered vents. EZClip mounting hardware gives you full access to the fan.• Recommended for high-powered fans• Quick, easy no-tool installation• Superior rain protection with less than 5% air flow restriction• Fits over the molded, waterproof mounting tabs on MaxxFan and MaxxFan Plus fan models• Simply slide the included clip through the tab to secure the FanMate cover• Gives you full access to the fan• Hardware with clips included for mounting on other fan models• 25"L x 18"W x 9.5"H EZClip mounting hardware gives you full access to the fan Fits over the waterproof mounting tabs on MaxxFan & MaxxFan Plus models Hardware with clips included for mounting on other fan models | Maxxair FanMate EZClip Vent Cover, Black