Product review (5 stars): Exactly What I Needed
I have a AutoFlo Model 250 humidifier and the solenoid went bad.  I checked Amazon, looked at the various choices and the related reviews.  This solenoid was made for my humidifier and got good reviews.  It was a no brainer.  When it came I took the old one off (not an AutoFlo brand) and put the new one on.  It fit the holes made in the side of the humidifier, no bracket was used just screwed into the side.  Easy to disconnect the old one and attach the new one.  This is a job just about anyone can do.  About a half hour of work.  And, it did not cost me a $70 service fee.  It is running great.