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Conversion kit turns the standard High Capacity Windstorm™ 52" butterfly fan into a High Efficiency model.
Manufacturer: Hog Slat®
SKU: WS-F52B-HE2A
$22.62

Use the Windstorm™ 52" fan High Efficiency Conversion Kit to convert the standard High Capacity model fan to achive the performance specifications of the High Efficiency model fans. 
Performance Specification Comparison Chart 

Item #       Description

CFM/
.0 static

CFM
/WATT
CFM/
.05 static 
CFM
/WATT
CFM/
.10 static 
CFM
/WATT
AIRFLOW
ratio
WS-F52B2A High
Capacity
30,100 21.6 28,900 19.9 27,500 18.1  .81
WS-F52B-HE* High
Efficiency
27,700 25.2 26,300 22.7 24,700 20.4  .80
*High Efficiency performance is achieved by replacing the stock pulley assembly on the WS-F52B2A fan with the High Efficiency Conversion Kit (SKU# WS-F52B-HE2A)

Use the Windstorm™ 52" fan High Efficiency Conversion Kit to convert the standard High Capacity model fan to achive the performance specifications of the High Efficiency model fans. 
Performance Specification Comparison Chart 

Item #       Description

CFM/
.0 static

CFM
/WATT
CFM/
.05 static 
CFM
/WATT
CFM/
.10 static 
CFM
/WATT
AIRFLOW
ratio
WS-F52B2A High
Capacity
30,100 21.6 28,900 19.9 27,500 18.1  .81
WS-F52B-HE* High
Efficiency
27,700 25.2 26,300 22.7 24,700 20.4  .80
*High Efficiency performance is achieved by replacing the stock pulley assembly on the WS-F52B2A fan with the High Efficiency Conversion Kit (SKU# WS-F52B-HE2A)
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