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4/6/8 Inch Inline Duct Fan Variable Speed Controller HVAC Blower Kit About this item Moves air through your target location efficiently for optimal ventilation Low Noise Level: Durable plastic fan housing and blades for extremely low noise(<37 dB); Variable speed controller for easy fan speed adjustment Easy Installation: Removable duct ends with locking tabs for quick removal and easy maintenance and a cord length of 5.4 feet for hassle free setup Versatile Applications: Suitable for industrial, household and horticulture ventilation applications for air clean and temperature control Note: Comes with an installation bracket indicating the direction of the airflow; Max ambient temp is 104℉ / 40℃ VIVOSUN Inline Duct Fan with Speed Controller Balanced blades are ideal for boosting air supply and venting exhaust air. Motor features a permanently lubricated bearing that operates quietly and requires no maintenance. Solve air delivery problems without major system rework or expense. Can be installed in any location, such as grow rooms, tents, etc. Features Power Supply: 110/120 V Current: 0.55 A Noise Level <37 dB Max Ambient Temp is 104℉ / 40℃. Application Scenarios Used as intake fan to bring fresh air into grow rooms; Also used as exhaust fan in smaller setups with LEDs or Lights under 600W. Used to extract smelliness from grow tents and powerful enough to pull air through carbon filters. When using this unit with a filter, attach the fan as close to the filter as possible. Four different installation methods for you to choose the better one in your grow room. Type Power Supply 120V Type VIVOSUN inline fan VIVOSUN inline fan VIVOSUNVentilation Complete Kit VIVOSUNVentilation Complete Kit VIVOSUN inline fan+Carbon filter Duct Size 4/6/8/ inches 4/6/8/ inches 4/6/8/ inches 4/6/8/ inches 4/6/8/ inches Air Flow 203/440/740 CFM 190/390/720 CFM 190/390/720 CFM 203/440/740 CFM 190/390/720 CFM Noise Level 49/50/53 dB 31 / 37 / 40 dB 31 / 37 / 40 dB 49/50/53 dB 31 / 37 / 40 dB Fan Speed 2400/2500/2550 RPM 2300/2450/2550 RPM 2300/2450/2550 RPM 2400/2500/2550 RPM 2300/2450/2550RPM Applications Grow tent, grow room, workshop, kitchen, basement, garage etc. Grow tent, grow room, workshop, kitchen, basement, garage etc. Grow tent, grow room, workshop, kitchen, basement, garage etc Grow tent, grow room, workshop, kitchen, basement, garage etc. Grow tent, grow room, workshop, kitchen, basement, garage etc. Features Low noise, powerful and high efficiency; ETL listed Come with variable speed controller, prefilter, and hanging straps Come with variable speed controller, temperature humidity monitor, prefilter, and hanging straps Low noise, powerful and high efficiency; ETL listed Come with variable speed controller, prefilter About usDelivery DetailsTerms of SalesContact US About us WHO ARE WE?One-stop shopping for all you want！Founded in California, VIVOSUN is a leading-manufacturer of indoor horticultural equipment, supplying growers around the world with the highest quality equipments to start their own indoor gardens.WHO ARE WE FOR?VIVOSUN is designed for do-it-yourselfers who want to grow what they love. They want a high-quality experience that allows them to easily grow their own, regardless of their skill level. We can develop a better grow culture if we work together.OUR BRAND POSITION?We are revolutionizing indoor growing for all people. These values act as filters and inspriation for any brand touchpoint. THese collective values define how we interact with the world. Delivery Details 1. Items are generally shipped out within 1-2 business days from our warehouse after your payment has been cleared (Sat. & Sun. & Public holiday excluded.) 2. We only offer local delivery in USA, which normally takes about 2-6 business days to arrive. If you need Express Mail Service, please contact us by eBay message. 3. We are not responsible for undeliverable address. We reserve the right to charge the shipping fee again for returned items due to wrong address supplied by buyer. Any non-received items caused by invalid address registered on PayPal are not in our full refund or replacement policy. 4. Our shipping rates include the cost of shipping, handling, packaging and related manpower costs. Terms of Sales Feedback & Detailed Seller Rating: We are transnational corporations, only strive for 5 star positive feedback and will try our best to offer the best service to our buyer. Please email us before leaving negative feedback or open any dispute and please give us 2 business days to resolve the complaint to your satisfaction. Returns: Return is accepted within 30 days after the buyer's receiving the item.After getting the returned item, we will refund the customer at the item's price (excluding the shipping costs to and from). Contact US 1. If there's any problem, please do not hesitate to contact us by eBay message, we will reply you within 2 business day (not include Public holiday). 2. Work Days: Monday to Friday 3. If you don't get response within 1 business days, please check your eBay email or My Messages in case your email provider has an overly-aggressive spam filter blocking eBay or my em ails. Please add us in your contact and email us again.