Installation of an Air Vent Whole House Fan

Installation of an Air Vent 54301 (WH242MLX) Whole House Fan. 24" Direct Drive model. Modified installation to frame a box in the attic, so it sits higher up in the attic rather than on top of a ceiling joist for reduced noise in the home. Also, used velcro to attach shutter to ceiling, so it is removable.
Purchased fan from Amazon.com www.amazon.com/.... Reviews were high, it was a reasonable cost, it was relatively quiet for a direct drive model, it was smaller (24") and less prone to maintenance than the belt driven model (30").