Double Angle Irons
a
b
c
b
d
Square Washer
Thickness:
1/4” (6 mm)
3”
(7.6 cm)
3” (7.6 cm)
Ø 9/16”
(1.4 cm)
a
b
c
b
d
Vertical walls are
to the outside
Single Angle Irons
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14
D. Fasten angle irons to roof structure mounting points
Single Angle Iron
Fasten the angle irons to the roof structure mounting
points at each end with Grade 8 hardware as shown.
Do not tighten the hardware until the upper mount
has been mounted to the angle irons (step 5). We
recommend orienting the angle irons so that the
horizontal legs are facing each other (or the vertical
legs are on the outside). Proceed to step 5.
Grade 8 Hardware (Installer-Supplied):
a. (4) 1/2-13 Bolt
b. (8) 1/2” Washer
c. (4) 3” Square Washer (supplied; see diagram)
d. (4) 1/2-13 Nylock Nut
Double Angle Iron
Fasten the angle irons to the roof structure mounting
points at each end with Grade 8 hardware as shown.
The angle irons with fan mounting holes should be
positioned on the inside, facing each other. Do not
tighten the hardware until the upper mount has
been mounted to the angle irons.
Grade 8 Hardware (Installer-Supplied):
a. (8) 1/2-13 Bolt
b. (16) 1/2” Washer
c. (8) 3” Square Washer (supplied; see diagram)
d. (8) 1/2-13 Nylock Nut
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