• High-Efficiency EC Motor: This 4 inch duct fan features a 24V EC motor delivering 2800 RPM at just 25W power, generating 211 CFM airflow (360m³/h) with ultra-quiet operation as low as 29dB - equivalent to normal conversation volume for undisturbed performance
• Precision Speed Control: The YOZON grow tent fan includes a PWM infinitely variable speed controller with 98 inch connection cable for flexible placement, enabling 30-100% airflow adjustment to perfectly match your grow tent, hydroponic or HVAC ventilation requirements
• Industrial-Grade Durability: Our duct fan features a heavy-duty metal base for reliable installation in any environment, corrosion-resistant ABS plastic housing, and stainless steel clamps (Grade 201) for secure connections
• Certified Safety Features: This green house fan comes with a UL-certified 70 inch power cord and ETL-compliant 24V power board, delivering enhanced safety for worry-free operation
• Ready-to-Use Package Includes: 1*4 inch inline duct fan unit, 1*speed controller, 2* hose clamps, 4*screw kits, 4*cushions, and an user manual - everything needed for immediate installation and use