40-watt solar attic fan (bdb) with thermostat/humidistat/adapter (22.5 x 22.5 x 11 in.) - runs at night - brushless motor – solar vent hail and weather resistant – “builder series” by remington solar remington solar <p><strong>cool your attic and home... save on electric bills... ease your hvac / furnace’s stress</strong>: attics can reach up to 140+ degrees in the summer months; it’s no wonder you dread paying your energy bill during july... remington solar could easily lower your energy consumption!</p><p>this solar powered roof fan ventilates your attic utilizing free solar power, which cools your home and takes the load off your hvac/furnace... saving you thousands over time!</p><p><strong>automatically switches power source... operates at night:</strong> most solar fans “claim” to have a 110v inverter to run the fan at night... except you have to climb up and manually switch the fan!</p><p>remington solar has solved that issue with the 110v hybrid adapter. it automatically detects low power from your panel, while checking the temperature of your attic to determine if it should run on house power! a $129 value... included free!</p><p><strong>built-in humidistat/thermostat:</strong> whether its humid or a dry climate, this fan was made for your home! its humidistat and thermostat allow it to automatically fight moisture or heat based on its readings!</p><p><strong>brushless motor to extend the fan’s life... texas windstorm certified:</strong> say goodbye to brush replacements on your outdated attic fan... this solar roof vent features a brushless motor, which turns the motor without wear or friction, extending the life of your fan! this fan is also texas windstorm certified!</p><p></p><p><strong> 30-day satisfaction guarantee and 15-year limited warranty</strong>: we’re so confident in this solar powered fan for attics, we’re giving you a 30-day risk-free trial, on top of a 15-year warranty! if you don’t like it, simply send it back and we’ll refund every cent!</p><p>** can ventilate 3400 sq. ft.**</p><p><strong>all parts included:</strong></p><ul><li>solar panel</li><li>fan with housing</li><li>humidistat/thermostat</li><li>hinges</li><li>mounting screws</li><li>110v hybrid adapter</li></ul>