I just picked up a new heated box and don't need this particular heater any more. It requires a controller that will accept the RCA jacks that are standard on Kendrick dew heaters.
This piece is about 6 inches wide and about 2.5 inches tall. It was bought new from Highpoint about 12 months ago. It has worked great. Nearly new condition (since it resides in my eyepiece case, it does not take much abuse!).
New this will cost $28 + shipping. I am selling it for $20 shipped. Paypal accepted.
Thanks for looking.