Filter
Top Products
3
Models SQ and BSQ
Centrifugal Square Inline Duct Fans
Greenheck’s model SQ and BSQ centrifugal inline fans
feature a unique combination of installation flexibility,
rugged construction, ease of service, high efficiency
and low sound levels. These compact inline fans are
the ideal selection for indoor clean air applications
including intake, exhaust, return or make-up air
systems where space is a prime consideration. The
need for costly square-to-round transition pieces is
eliminated reducing installation costs. The square
housing design, compact size and straight-thru airflow
also give the system designer the flexibility to mount
SQ and BSQ fans in any configuration - horizontal,
vertical or at any angle.
• Broadest performance in the industry, up to
4 in. wg (1,000 Pa) and 28,000 cfm (47,000 m
3
/hr).
• Performance as cataloged is assured. All fan sizes
are tested in our AMCA Accredited Laboratory, and
all models are licensed to bear the AMCA Sound
and Air Performance seals.
• UL Listed for Electrical.
• These Greenheck products are subjected to
extensive life testing to assure the fans will provide
many years of reliable performance.
Over the years Greenheck has listened to your needs
and input to remain the industry leader.
• Each fan is tested at the factory prior to shipping.
The test includes vibration check, adjusting RPM
and maximum amp draw.
Model Comparison
Model
Location Mounting Airflow Application
Drive
Type
Impeller
Type
Performance
Relative Cost
Outdoor
Indoor
Roof Curb
Base/Floor
Hanging
Wall
Ceiling Mounted
Exhaust
Supply
Reversible
Recirculate
General/Clean Air
Contaminated Air
Spark Resistant
Grease (UL 762)
Smoke Control (UL)
High Wind (150 mph)
High Temp (above 200°F )
Belt
Direct
Centrifugal
Propeller/Axial
Mixed Flow
Maximum Volume
(cfm)
Maximum Static Pressure
(in. wg)
SQ
5,000 2 $
BSQ
27,200 4 $
• Each fan displays a permanently stamped metal
nameplate with complete model number, mark and
unique serial number for future identification.
• Packaged-product is tested in accordance with
ISTA (International Safe Transit Association)
standards and procedures.
Turn to our inline fans to meet your requirements for
applications in office buildings, schools and hospitals
to name a few.