BIG ASS FANS Isis Guide D'installation page 12

Isis
®
4
Pre-Installation (cont.)
Alternative mounting methods
The following can be purchased for unique residential mounting methods not covered in this manual. Consult a structural engineer prior
to fan installation. For more information, contact your Big Ass Fans Sales Representative or Customer Service.
I-Beam Adapter
The I-beam adapter can be purchased for hanging the Isis from I-beams. Big Ass Fans offers both a small and large adapter depending on
the width of the I-beam. The I-Beam Adapter can only be used on I-beams that are 5" (12.7 cm) to 9-7/8" (25 cm) (small adapter) or 9-7/8"
(25 cm) to 14-5/8" (37 cm) (large adapter) in width. It is not recommended to mount the fan from fabricated I-beams. Consult a structural
engineer to ensure your building structure meets the necessary requirements.
Z-Purlin Brackets
Specialized brackets can be purchased for hanging the Isis from building structures consisting of Z-purlins with lengths ≤30 ft and heights
ranging from 8" (20.3 cm) to 10" (25.4 cm), and spaced ≤5 ft apart. The Z-purlin brackets accommodate up to a 5:12 roof pitch. Consult a
structural engineer to ensure your building structure meets the necessary requirements. Note: Angle irons are not supplied.
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