Item Condition Opened box - original retail box shows some wear. In excellent condition. Opened but never been used. Includes sealed hardware with user guide manual. We have tested this for functionality. Item Location Ships from our warehouse in Las Vegas, Nevada, 89102, USA Fast FREE Shipping We handle all paid orders within 1 business day. Best Offers Accepted Offers are reviewed at the close of business each night. We accept reasonable offers for - Multiple units of the same item - Errors or condition changes within our listing - Combining shipping for 2 or more separate orders Return Policy We offer a 30 day return window from when you receive the item. Items must be in the same condition and in original packaging. Seller Warranty - We Protect Against Defects Our in-house technicians evaluate and refurbish every electronic item we list. We are proud to offer our customers a 30-day warranty against defects. Contact us directly by selecting "I have a question about using my item or I want to send the seller a message." We are eager to hear from our customers. Product Description The Tjernlund UnderAire Series Crawl Space Ventilators are designed to circulate fresh outdoor air underneath homes and porches. Excessive humidity levels in Crawl Spaces is the leading cause of premature rotting of support columns, joists, floors and beam supports. Humidity can promote fungus growth and increased termite activity. Humidity may also cause plumbing failures due to rust and corrosion. Constant operation helps vent radon gases, treated wood off-gassing and other odors that might migrate into living areas. The (V4D) is controlled by a dehumidistat which actuates the fan if the relative humidity rises above the selected set-point. Dimensions: 18 in. x 11 in. x 4 in., trimmable dimensions: 12-1/2 in. x 10-1/2 in. Includes adjustable dehumidistat, freeze protection limit and 6 ft. grounded power cord Power ventilate musty, damp crawl spaces through existing passive vents Motor: 120-Volt 50/60 Hz, 0.24 Amp maximum Dimensions Product Depth (in.) 18 in Product Height (in.) 4 in Product Width (in.) 11 in Details Amperage (A) 0.2 Brand/Model Compatibility Universal Duct Type Ductless Horsepower (hp) .05 HVAC application Ventilation Material Metal Maximum air flow (CFM) 400 Pack Size 1 Product Weight (lb.) 9 lb Voltage (volts) 120