In-line Duct Booster Fans
Inline Centrifugal Duct Fans
Purpose-Built for Powerful Inline Ventilation in Compact Duct Installations
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The BDF series is a high-efficiency inline duct fan designed for boosting airflow in round duct applications where space, reliability, and quiet operation are critical. With a heavy-gauge galvanized steel housing and backward-curved centrifugal impeller, it handles moderate static pressure with ease—making it ideal for supply, exhaust, or return air setups across a wide range of HVAC installations.
Inline Axial Duct Fans
High-airflow axial duct fan designed for efficient inline ventilation in residential and commercial HVAC systems ...
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The BORAX series axial inline duct fans deliver powerful airflow ranging from 330 to 1800 CFM, ideal for ventilation applications requiring high-volume air movement with minimal pressure drop. Built with a precision-balanced axial impeller and robust metal housing, BORAX is the go-to choice for boosting airflow across HVAC duct systems in spaces where performance, noise control, and reliability matter.
Square Centrifugal Fans
Engineered for Demanding Kitchen Ventilation Applications
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The BVN BKEF-R Series is designed to meet the rigorous demands of commercial kitchen exhaust systems. With a backward-curved centrifugal impeller and a motor positioned entirely outside the airstream, these fans ensure reliable operation in high-temperature, grease-laden environments.
BDF
Inline Centrifugal Duct Fans
Why Choose BDF?
Proven inline airflow performance
Delivers strong and stable airflow for round duct systems, handling moderate static pressure with ease across supply, exhaust, and return air applications.
Quiet operation
Backward-curved centrifugal impeller reduces turbulence and noise, supporting quieter HVAC installations.
Compact and space-efficient
Cylindrical inline housing fits easily into tight mechanical spaces and retrofit projects.
Flexible installation
Suitable for installation in any orientation, allowing flexible duct routing in real HVAC layouts.
Durable construction
Heavy-gauge galvanized steel housing provides long service life and corrosion resistance.
Wide application coverage
Available in duct sizes from 4″ to 12″ with airflow capacities from 120 CFM to 950 CFM, supporting a wide range of HVAC requirements.
Reliable motor protection
External rotor motor with thermal protection ensures safe and dependable operation.
Flexible speed control options
Single-phase models compatible with linear voltage regulators; three-phase models compatible with inverter drives (on request).