Instructions / Assembly
The total pressure drop for any duct run equals the sum of  the fitting (or 
bend) pressure drops and the pressure drop of  the straight duct section. 
Entrance fitting =  35 ft. 
Total duct length =  14 ft. 
2 x 45° bends (2 x 10’) =  20 ft. 
1 x 90° bend (1 x 20’) =  20 ft. 
Exit fitting =  35 ft. 
Total Equivalent Length =  124 ft. 










