Comments about DURAFAN® 20" Lite-Air Fan:

The fan has run continuously approximately May through September in a small door-less shed-row barn, and has been left in place off-season. It has operated non-stop throughout summer with temperature in the high nineties and extreme humidity, then sat through winter with weather dipping into days of 5-degree temperature ranges. It shows no deterioration despite those extremes.
The slick, durable finish has not allowed it get dirty after a year's use.
Installation is very simple-- my husband promises that anyone who can use a screwdriver can install this fan. The bracket inspires confidence with its sturdy, simple construction.
The fan has no on/off switch-- one simply unplugs it to turn it off. This is how we would have turned any fan on/off anyway.
It is set at the optimum speed to move air gently around the stall-- we have never considered a need for a variety of speeds. It moves air throughout the entire 12'x12' stall, cooling her and keeping insects from landing without blowing the wood shavings.
It is the quietest fan we have experienced after visiting several facilities and having tried another fan previously in the same stall.