[RE-wrenches] Seasonal Adjusters

[Darryl Thayer]

He all
I need help designing or buying a seasonal adjuster.  I have a customer that insists on a seasonal adjustment.  They would like 30 degrees summer side of equinox and 50 degrees winter side.  Wants to adjust twice a year at equinox.  Rack to be 3 sets of 3 modules each on two rails.  

Every time I have tried this it is heavy and very difficult to do. 
Darryl