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The model number system is designed to completely identify the fan. The correct code letters must be
specified to designate belt drive with exhaust or supply air configuration. The remainder of the model
number is determined by the size and performance selected from pages 26 through 38.
Belt Drive Model Number Code
SB E - 2 L 24 - 7
Sidewall Belt Drive
SB - Fabricated Propeller
SBC - Cast Propeller
(Level 3 only)
E - Exhaust
S - Supply
R - Reversible
Level of
Construction
1, 2, 3
Motor HP
4 =
1
⁄4 15 = 1
1
⁄2 75 = 7
1
⁄2
3 =
1
⁄3 20 = 2 100 = 10
5 =
1
⁄2 30 = 3 150 = 15
7 =
3
⁄4 50 = 5 200 = 20
10 = 1
For specific motor limitations and
availability see page 31.
Fan Size
Propeller Type
L - Low
H - High