4" Inline Duct Fan - 203 CFM Hydroponics Vent Blower w/ Centrifugal Impeller, Galvanized Steel for Grow Tents, Basements & Kitchens

Supercharge your ventilation with this industrial-grade 4" inline fan! Engineered for high-performance airflow (203 CFM at 2500 RPM), it delivers targeted climate control for sensitive environments. The aerodynamic centrifugal impeller generates massive airflow at just 49 dB noise—quieter than a conversation. Crafted from factory-painted galvanized steel to resist humidity corrosion, it's built to outlast plastic competitors. Dual flanges enable tool-free installation in minutes, while the versatile design tackles hot spots in grow rooms, steam-filled bathrooms, stuffy basements, or commercial kitchens. Note: Speed controller sold separately for customizable airflow.Technical SpecsAirflow: 203 CFMNoise Level: 49 dBRPM: 2500Duct Size: 4 InchesConstruction: Galvanized Steel HousingMotor: Dual-Ball BearingVoltage: 120VDimensions: 12" L x 6.5" W x 6.5" HWeight: 5.7 lbsPro Tip:Pair with a $15 speed controller (sold separately) to dial down airflow for seedlings. Use rigid ducts (not flexible) to maximize CFM efficiency.Critical Note:Speed controller not included. For variable RPM control, use only compatible 120V controllers (e.g., INKBIRD or AC Infinity). Do not overload circuits—fan draws 0.9A.Ideal For:Grow tents (up to 8x8 ft)Bathroom moisture controlKitchen exhaust boostingBasement dehumidificationCommercial HVAC assist