12’–24’ BASIC 6
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4a. Fasten single angle irons to roof structure mounting points
Fasten the angle irons to the roof structure mounting points at each end with customer-supplied Grade 8 hardware as shown. Do not
tighten the hardware until the upper yoke has been mounted to the angle irons (step 5). Big Ass Fans recommends orienting the angle
irons so that the horizontal legs are facing each other. Refer to the illustration below.
Proceed to step 5.
Grade 8 Hardware (Customer-Supplied):
a. (4) 1/2-13 Bolt
b. (8) 1/2” Washer
c. (4) 3” Square Washer (BAF-Supplied; see diagram)
d. (4) 1/2-13 Nylock Nut
b
a
c
b
d
Mounting Structure: Bar Joists (cont.)
Note: Ensure the angle irons are oriented as shown.
Vertical walls are
to the outside.
Square Washer
Thickness:
1/4” (6 mm)
3”
(7.6 cm)
3”
(7.6 cm)
Ø 9/16”
(1.4 cm)
If the angle iron span is greater than 8 ft (2.4 m) and requires double angle irons, proceed to step 4b.
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