Robbins & Myers (R&M) 22” Industrial Window Fan B-3400B Reversible 2 Speed with a Thermostat.

Well - I have never seen this model with the built in thermostat! You can even see on the original box it has the Cat. No. placed over the regular “B-3400.”

WORKS Great! I have used all of the settings. Forward (Out) reverse (In) in both High & Low. The thermostat (missing knob) goes up to 12 and either slows the fan down or speeds it up.  I posted a video to show the various speeds.  Of course the cell phone recording makes the blades look like they are going slower than they actually are.

Also includes the original metal sides.  

Made in Memphis Tennessee USA.

If you’d rather - Local pick-up is from Long Island NY.

I have the original box but would add a lot to shipping since it is much larger than the fan. But if you’re interested in it let me know.

* I am not sure what shipping might say on your end but I will reimburse extraneous shipping.