Product review (5 stars): Thanks for the spare part we needed...
...great replacement part for A/C window unit.  Make sure you research which part you need !  The part number changed for the knob we needed, because the original knob is no longer manufactured (I'm gonna guess that the original knob broke for too many people and that the new knob is an improved version that's more durable).  Lots of sites mention both knob numbers, the original number and the new number.  Our A/C unit happens to be Gibson, but this part works for several brands (sometimes different brands are made by the same manufacturer anyway, using the same parts).  Anyway, I'd like to thank the Amazon vendor for carrying this item at a good price !