Specification Sheet

236
0.00
0.20
0.40
0.60
0.80
1.00
1.20
0500010000 15000 20000 2500
03
0000
Pressure Loss (In. W.G.)
CFM
42
36
3024
20181512107-8
0.00
0.20
0.40
0.60
0.80
1.00
1.20
0500010000 15000 20 00025000 30000
Pressure Loss (In. W.G.)
CFM
42
36
3024
20181512107-8
Use the estimated pressure drop graphs to help select the proper fan that will deliver the desired
airow. Enter the graph from the bottom at the specied CFM and move vertically upward to the fan
curve for the desired size, then horizontally to the left and read the estimated static pressure drop
resulting from these typical accessory packages. Add the accessory pressure loss to the system (or
building) design static pressure loss to obtain the total static pressure loss to be used for the proper
fan selection.
Use the estimated pressure drop graphs to help select the proper fan that will deliver the desired
airow. Enter the graph from the bottom at the specied CFM and move vertically upward to the fan
curve for the desired size, then horizontally to the left and read the estimated static pressure drop
resulting from these typical accessory packages. Add the accessory pressure loss to the system (or
building) design static pressure loss to obtain the total static pressure loss to be used for the proper
fan selection.
MODEL SQB
BELT DRIVE SQUARE INLINE CENTRIFUGAL DUCT FAN
PRESSURE LOSS GUIDE FOR 1” FILTER BOX
PRESSURE LOSS GUIDE FOR 2” FILTER BOX
FILTER BOX OPTIONS Cont.