{"product_id":"vivosun-m4-4-inch-inline-duct-fan-195-cfm-ec-motor-adjustable-speed","title":"VIVOSUN M4 4-Inch Inline Duct Fan – 195 CFM, EC Motor, Adjustable Speed","description":"\u003ch2\u003eEfficient ventilation for grow spaces\u003c\/h2\u003e\n\u003cp\u003eMeet the VIVOSUN M4 4-Inch Inline Duct Fan, a compact yet mighty solution designed to move air where you need it most. With a PWM-controlled EC motor and a mixed-flow design, this unit delivers robust airflow while keeping energy use and heat to a minimum.\u003c\/p\u003e\n\u003cp\u003eIn practical setups, expect strong airflow with low energy consumption and minimal noise. The fan operates at about 2800 RPM and provides up to 195 CFM, offering a balance of power and efficiency that suits tents, rooms, or basements where air exchange matters.\u003c\/p\u003e\n\n\u003ch3\u003ePerformance you can feel\u003c\/h3\u003e\n\u003cp\u003eThe combination of a PWM-controlled EC motor and a mixed-flow design delivers reliable airflow while staying energy-efficient. The noise level remains low, making it a sensible pick for spaces that require steady ventilation without distraction.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEfficient PWM-controlled EC motor for precise speed control\u003c\/li\u003e\n  \u003cli\u003eMixed-flow design delivering strong airflow with lower energy use\u003c\/li\u003e\n  \u003cli\u003e195 CFM capacity with a quiet 28 dB noise level\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdjustable, safe, and easy to wire\u003c\/h3\u003e\n\u003cp\u003eFine-tune performance with a simple three-speed knob. The ETL-listed motor features automatic reset to prevent overheating and locked-rotor protection in case of blockage, plus a flame-retardant junction box for added safety.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThree-speed PWM control for flexible airflow\u003c\/li\u003e\n  \u003cli\u003eAutomatic reset and locked-rotor protection\u003c\/li\u003e\n  \u003cli\u003eFlame-retardant junction box for fire resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSetup and maintenance\u003c\/h3\u003e\n\u003cp\u003eIntake and exhaust flanges with locking tabs simplify hose connections, while the 5.9 ft cord provides flexible placement. Components detach for quick cleaning and servicing, helping you keep the unit performing steadily.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLocking-tab flanges for quick, secure connections\u003c\/li\u003e\n  \u003cli\u003e5.9 ft power cord supports flexible installations\u003c\/li\u003e\n  \u003cli\u003eDetachable housing, impeller, and blade simplify maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eVersatile applications\u003c\/h3\u003e\n\u003cp\u003eUse it to exhaust stale air, supply fresh air, and balance humidity in grow tents, grow rooms, basements, or other spaces where reliable ventilation matters. The M4 is designed to support consistent airflow across setups.\u003c\/p\u003e\n\u003cp\u003eNote on expectations: This fan provides strong ventilation potential. Actual results depend on ducting, placement, and other factors in your space.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What spaces is the VIVOSUN M4 Inline Duct Fan best suited for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Ideal for grow tents, grow rooms, basements, and spaces needing balanced airflow and humidity control.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I adjust speed and what about noise?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use the PWM knob to select one of three speeds; expect quiet operation around 28 dB at low speeds.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"VIVOSUN","offers":[{"title":"Default Title","offer_id":48213303492852,"sku":"B0DGGCP1J5","price":50.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/6652\/0820\/files\/vivosun-m4-4-inch-inline-duct-fan-front-view.jpg?v=1778468870","url":"https:\/\/www.cerapatiogarden.com\/products\/vivosun-m4-4-inch-inline-duct-fan-195-cfm-ec-motor-adjustable-speed","provider":"Cera Garden","version":"1.0","type":"link"}