
Mixed Flow Fans
Mixed flow fans are more efficient than comparable sized centrifugal and axial fans. They operate at lower sound levels with lower operating costs. Greenheck mixed flow models have a range of capabilities and features for different applications.
OVERVIEW

SQ Mixed Flow
Model SQ is a direct drive square inline mixed flow fan designed for intake, exhaust, return or make-up air applications when efficiency, sound and cost are a major focus. Units have multiple mounting options for indoor and outdoor locations, Vari-Green® EC motors and a variety of accessories that make this model a great solution for many applications. All of these features add up to make the SQ Mixed Flow fan the most cost effective mixed flow option on the market.
- Up to 27,800 cfm
- Up to 3 in. wg
- Galvanized or chemical resistant coated steel housing
UL/cUL 705
AMCA licensed for FEI, Air & Sound Performance

QEI
The QEI is a mixed flow fan for commercial, institutional, and industrial applications handling everything from clean air to high temperature exhaust. Model offers multiple construction levels to match the application providing best performance at the most economical solution. Features performance enhancing airflow straightening vanes and easily accessible motor outside of the airstream. The QEI model has a variety of mounting options for indoor and outdoor locations.
- 1,100 to 116,000 cfm
- Up to 8 in. wg
- Spark A, B and C resistant construction available
- Galvanized, chemical resistant coated steel or aluminum housing material options

QEID
Model QEID is a compact, direct drive version of the QEI for space critical applications. It requires less maintenance with fewer components, while airflow straightening vanes assist in improved performance. For best value by application, the QEID has the construction level options, but with performance and lower maintenance benefits by eliminating belts, pulleys and fan shaft bearings. Vari-Green® EC motors or induction motors with factory programmed VFD provide easy adjustment and control.
- 700 to 88,000 cfm
- Up to 10 in. wg
- Spark B and C resistant construction available
- Galvanized or chemical resistant coated steel housing material options

QEID FJ
- 640 to 3,000 cfm
- Up to 3 in. wg
- Spark A resistant construction
UL/cUL Listed for Electrical (UL/cUL 705)
AMCA licensed for FEI, Air & Sound Performance
- Catalogs
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Instruction Manuals
- Model SQ Mixed Flow (#484909 IOM)
- Model SQ Mixed Flow (#485448 IOM)
- Model QEID FJ (#485229 IOM)
- Models QEI and QEID (#481954 IOM)
- Quick Start Guide Filtration and Duct Adaptor (#485551 IOM)
- Quick Start Guide Outdoor Cover (#485552 IOM)
- Quick Start Guide Side Discharge (#485776 IOM)
- Fan Monitoring System (#479585 IOM)
- Sure-Aire Electronics (#1021624 IOM)
- Variable Frequency Drive (VFD) and Control Packages (#1016626 IOM)
- Specifications
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Drawings
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STATIC MODEL DOWNLOAD3D CAD2D CAD
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SQ Mixed FlowQEIQEIDQEID FJ
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- Application Information
- Videos
- Other Product Information
- Warranty
- Project Profiles