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Models G and GB
Spun Aluminum • Downblast
Centrifugal Roof Exhaust Fans
Location
Mounting
Model
G
GB
* Smoke Control available on models: 101, 101HP, 121, 131, 141, 141HP, 161, 161HP, 200, 240, 300, 360, 420 and 480.
** High wind limited to sizes 300 and smaller
Greenheck models G and GB centrifugal roof exhaust
fans provide the industry's best performance and
durability for general clean air applications where air is
discharged downward, toward the roof surface.
• Broadest performance in the industry, up to
3.25 in. wg (810 Pa) and 45,000 cfm (76,500 m
• Most advanced motor cooling of any fan in its class.
• 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.
• Greenheck subjects these products to extensive life
testing, assuring you that the fans will provide years
of reliable performance.
Direct Drive, G
• Use for short and/or low resistance ductwork
Belt Drive
GB
,
• For average length and/or average
resistance ductwork
• High volume/average pressure
High Pressure, GB-HP and G-HP
• For long and/or high resistance ductwork
• Low volume/high pressure
Model Comparison
Airflow
Application
3
/hr).
Drive
Impeller Type Performance
Type
6,308
1.75
44,700
3.25
$
$
3
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