Wine yesterday.....Wineguard today

This is the manual aerial I've had taken off Gerty.  There's an automatic aerial installed and the only reason she was left on was so the past owners didn't need to worry themselves with the 'hole' it left on the roof.  My plan is to sell it and put the proceeds towards a new vent with a fan that will moderate the temperature in the van, extracting hot air when it gets too warm and pressing the warm air that has risen back down when it gets too cool.  

Wanna buy a Wineguard?!?