One of these kits is required for each row (bank) of heliocol solar collectors. It features the cpvc pipe connector to connect 1. 5 inch or 2 inch pipe to the inlet and the outlet of the row. It also contains 2 flush end caps to complete the corners of the row opposite to the inlet and outlet along with the panel clamp assembly, which is a durable, specially-engineered clamp that never requires replacement and never needs to be tightened.