The Combo Clam-P is a component of the 516 PRO SERIES, but its roots come from the 4-inch Clam-P from the Single Bolt Model.  
 
The Combo Clam-P allows for 4-foot anchoring, which reduces the overall penetrations on a residential roof and reduces the overall weight of the complete solar system.  
The Combo Clam-P also helps level the panels for a cleaner appearance.
 
The Combo Clam-P also bonds the panels, allowing the need for only ONE (1) grounding lug for the whole array. By reducing the need for copper grounding wire, and grounding lugs, you save time and money.
 
Less penetrations=Less work
Less work=Faster installs
Less material=More savings