Roof Slope 2/12 4/12 6/12 8/12 10/12
Roof Angle 9.5° 18.4° 26.6° 33.7° 39.8°
Fan Diameter (Ft) Recommended Extension Length (Ft) Exclusion Zone Radius (In.)
8 N/A N/A 1 1 2 15
10 N/A 1 1 2 3 18
12 N/A 1 2 3 4 22
14 1 2 3 4 5 26
16 1 3 4 5 7 29
18 2 3 5 6 8 33
20 2 4 5 7 9 36
24 3 5 7 9 11 44
Angled roof beam
Extension (optional)
Pendant
light
Exclusion zone
Length
(ft.)
Roof slope =
rise
run
rise
run