{"product_id":"tjernlund-products-v2d","title":"Tjernlund Products V2D Crawl Ventilator","description":"\u003cp\u003eThe \u003cstrong\u003eTjernlund V2D UnderAire Crawl Space Ventilator\u003c\/strong\u003e is a high-capacity mechanical ventilation solution engineered to mitigate \u003cstrong\u003ecrawl space moisture\u003c\/strong\u003e and improve structural integrity. Delivering \u003cstrong\u003e220 CFM\u003c\/strong\u003e of airflow via twin maintenance-free fans, this unit is designed to mount directly behind standard 8-inch x 16-inch foundation vents. By facilitating active \u003cstrong\u003eair exchange\u003c\/strong\u003e, the \u003cstrong\u003eTjernlund V2D\u003c\/strong\u003e prevents the accumulation of stagnant air that leads to wood rot, fungal growth, and plumbing corrosion. This model features an integrated \u003cstrong\u003eadjustable dehumidistat\u003c\/strong\u003e with a 20% to 80% RH range, allowing for precise control over humidity levels to combat \u003cstrong\u003econdensation\u003c\/strong\u003e. Additionally, a factory-installed \u003cstrong\u003efreeze protection thermostat\u003c\/strong\u003e shuts down the fans when temperatures drop below 40°F (cycling back on at 50°F) to prevent frozen pipes. For technicians managing \u003cstrong\u003eradon mitigation\u003c\/strong\u003e or off-gassing from treated lumber, the \u003cstrong\u003eV2D crawl space fan\u003c\/strong\u003e provides a consistent exhaust path to move soil gases and odors out of the building envelope before they migrate into living areas.\u003c\/p\u003e\n\n\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e220 CFM output\u003c\/strong\u003e provides sufficient air exchange for large crawl spaces or areas with high moisture loads.\u003c\/li\u003e\n  \u003cli\u003eIntegrated \u003cstrong\u003edehumidistat\u003c\/strong\u003e and \u003cstrong\u003efreeze protection thermostat\u003c\/strong\u003e automate operation based on real-time environmental conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGalvanized steel faceplate\u003c\/strong\u003e (18\" x 9\") is trimmable down to 14\" x 6\" for non-standard foundation openings.\u003c\/li\u003e\n  \u003cli\u003eAided \u003cstrong\u003eradon gas removal\u003c\/strong\u003e and reduction of volatile organic compounds (VOCs) through continuous exhaust ventilation.\u003c\/li\u003e\n  \u003cli\u003ePre-wired with a \u003cstrong\u003e6-foot grounded power cord\u003c\/strong\u003e for rapid installation without the immediate need for hardwiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eHow many V2D units are required for a specific square footage?\u003c\/strong\u003e\u003cbr\u003e\nTo calculate the \u003cstrong\u003eventilation rate\u003c\/strong\u003e, determine the total cubic volume of the crawl space and divide by 15. A single \u003cstrong\u003eTjernlund V2D\u003c\/strong\u003e is typically rated for approximately 1,100 square feet at a 3-foot height, though sites with higher humidity may require additional units to achieve effective \u003cstrong\u003emoisture control\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan these fans be used for supply air instead of exhaust?\u003c\/strong\u003e\u003cbr\u003e\nYes, the \u003cstrong\u003ereversible fan\u003c\/strong\u003e assemblies allow the unit to be configured for either exhaust or supply. For optimal \u003cstrong\u003ecross-ventilation\u003c\/strong\u003e, technicians often install the V2D as an exhaust fan on one side of the foundation while using passive vents or supply fans on the opposite side to balance the \u003cstrong\u003estatic pressure\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill the freeze protection prevent the fan from running in the winter?\u003c\/strong\u003e\u003cbr\u003e\nThe built-in thermostat is designed to interrupt the circuit when outdoor air temperatures reach 35°F to 40°F. This is a critical safety feature to prevent the intake of freezing air which could lead to pipe bursts in unconditioned spaces.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong style=\"color: red;\"\u003eThis item is not eligible for free shipping.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Tjernlund Products","offers":[{"title":"Default Title","offer_id":43465316106418,"sku":"V2D","price":300.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Screenshot2023-11-30130308.png?v=1701818810","url":"https:\/\/www.gsistore.com\/en-ca\/products\/tjernlund-products-v2d","provider":"GSIstore","version":"1.0","type":"link"}