Specification Brand : ONNAO BulletPoint1 : Energy-Efficient Ventilation: This powerful blower with a fan speed of 2550 RPM can create an air flow of 200 CFM; It combines the features and benefits of axial and centrifugal fan, effectively circulating air. BulletPoint2 : Low noise and speed control: Durable plastic fan housing, revolving Smoothly and powerfully blades for less than 31 dB noise. With a variable speed controller, you can adjust it to desired airflow level according to your requirement. BulletPoint3 : Easy installation: removable duct ends with locking tabs for quick removal and easy maintenance. Universal mounting bracket for direction of airflow indicating.This duct fan is compact and lightweight so it can be installed in small areas. BulletPoint4 : Multifunctional: suitable for industrial, household and horticulture ventilation applications, help you maintain a healthy grow room. Ideal solution for multi-purpose use in residential and commercial ventilation BulletPoint5 : Removable duct ends with locking tabs Note: max ambient temp is 104℉/40℃. Widely Applications: Suitable for industrial, household and horticulture ventilation applications; It can quietly and efficiently moving large volumes of air throughout your ventilation system. Color : Black ElectricFanDesign : blower ItemName : ONNAO Inline Duct Fan 4 Inch 200 CFM with Variable Speed Controller Ventilation Exhaust Fan for Grow Tent, Hydroponics, Indoor Garden, Low Noise HVAC Vent Blower (4 Inch Fan) ItemPackageDimensions_Height : 7.8 inches ItemPackageDimensions_Length : 11 inches ItemPackageDimensions_Width : 3.8 inches ItemTypeKeyword : greenhouse-ventilation-equipment Manufacturer : ONNAO ModelName : Inline Duct Fan ModelNumber : TSFJ-NEW NumberOfBoxes : 1 PartNumber : TSFJ-NEW PowerSourceType : ac ProductDescription : Inline Duct Fan 4 Inch 200 CFM with Variable Speed Controller ProductSiteLaunchDate : 2024-10-04T01:29:12.372Z RecommendedUsesForProduct : Ventilating Size : 4 Inch Fan SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 40101600