Hooded Roof Propeller Fans

L Propeller:
Swept, steeply pitched blade design. These propellers typically run at lower RPMs and generate low sound levels making them the best selection for sound critical applications or applications requiring the best combination of both air and sound performance. Typically used when
the static pressure is 0.5 in. wg (13 mm) or less.
H Propeller:
Straight, moderately pitched blade. It is designed for applications where static pressures are above 0.5 in. wg (13mm) These propellers typically run at higher RPMs and generate slightly higher sound levels than the “L” propellers.

Category:

Description

Hooded Roof Propeller Fans

From general ventilation of factories and warehouses to industrial duty, the range of construction and performance capabilities offered in this catalog represent the most comprehensive hooded propeller
roof fan line available.
Regardless of fan size, performance or duty level, all Greenheck hooded propeller roof fans are built to perform with the same high standards of reliability and durability.
Two propeller and drive frame combinations are available. These models are designed and constructed for applications with static pressure ranges up to 1 in. wg. Models RE2 and RS2 are available with welded and die formed steel blades, while models RCE3 and RCS3 offer a cast aluminum propeller. For low sound applications, it is best to select the largest fan with the lowest RPM to meet the performance requirements. This ensures the tip speeds will be as low as possible.

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