{"product_id":"tjernlund-products-db-2","title":"Tjernlund Products DB-2 Duct Booster","description":"\u003cp\u003eProfessional-grade airflow solutions require hardware that stands up to static pressure. The \u003cstrong\u003eTjernlund Products DB-2 Duct Booster\u003c\/strong\u003e is a high-performance \u003cstrong\u003einline centrifugal fan\u003c\/strong\u003e designed to increase the delivery of conditioned air to poorly served branch ducts. Engineered for versatility, the DB-2 integrates into \u003cstrong\u003eround ducts (5 to 8 inch)\u003c\/strong\u003e or \u003cstrong\u003erectangular ducts\u003c\/strong\u003e as shallow as 3.25 inches. With a peak capacity of \u003cstrong\u003e275 CFM\u003c\/strong\u003e, this unit effectively overcomes the resistance common in long duct runs or gravity-style systems. The 120V, 0.51 Amp motor is strategically positioned outside the airstream to ensure an extended service life and reliable operation in temperatures reaching up to \u003cstrong\u003e200°F\u003c\/strong\u003e. For technicians looking to automate airflow, this unit is compatible with the \u003cstrong\u003ePS1503 Duct Airstat\u003c\/strong\u003e for pressure-sensing activation. Whether addressing \"cold rooms\" or boosting central AC delivery to a second floor, the DB-2 provides the \u003cstrong\u003ehigh-volume airflow\u003c\/strong\u003e and \u003cstrong\u003eHVAC ventilation efficiency\u003c\/strong\u003e required for modern residential and light commercial applications.\u003c\/p\u003e\n\n\u003cstrong\u003eKey Benefits for Contractors:\u003c\/strong\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Mounts easily to 5\", 6\", 7\", or 8\" round ducts and works with rectangular trunk lines as shallow as 3.25 inches.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnhanced Thermal Durability:\u003c\/strong\u003e External motor mounting protects internal components from heat, making it suitable for \u003cstrong\u003ehigh-temperature air handling\u003c\/strong\u003e up to 200°F.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation Flexibility:\u003c\/strong\u003e Includes a mounting template and requires only a 4\" x 7\" cutout; attaches securely with four sheet metal screws.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerformance Specs:\u003c\/strong\u003e Features a totally enclosed, permanently lubricated 1\/70 HP motor running at 1550 RPM for quiet, consistent \u003cstrong\u003eCFM boosting\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstrong\u003eCommon Questions:\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eCan the DB-2 be used for combustion exhaust?\u003c\/strong\u003e\u003cbr\u003e\nNo, this unit is specifically designed for conditioned air circulation only. It must not be used to vent flue gases or combustible fumes.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this unit compatible with speed controllers?\u003c\/strong\u003e\u003cbr\u003e\nYes, the DB-2 supports variable speed operation when paired with a compatible 120V speed controller, allowing for precise airflow balancing in complex zones.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow should the motor be oriented during installation?\u003c\/strong\u003e\u003cbr\u003e\nFor optimal bearing life, the unit must be mounted so the motor shaft remains horizontal to the floor. It can be installed on the bottom of horizontal ducts or the side of vertical ducts.\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":43465314992306,"sku":"DB-2","price":218.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Pic_a2d777b1-6a8d-493a-996d-8495ca72c06f.png?v=1701818089","url":"https:\/\/www.gsistore.com\/en-ca\/products\/tjernlund-products-db-2","provider":"GSIstore","version":"1.0","type":"link"}