The overhead trolley is made from a piece of 3/8"x3/4" flat bar. Aluminum wheels are sliding glass door rollers.

 

 

 

 

 

 

 

 

 

 

The trolley fits nicely in standard Unistrut.

 

 

 

 

 

 

 

 

All text, images, and drawings are Copyright 2004 by Gary Brady