C Channel is used as the center support member with both the 7� wide (84�) sundeck bracket and 10� wide (124�) super sundeck bracket. It is available in 2 different lengths. The 7� 9� length is used with one 8� L segment or for the first L segment with multiple of 2 or more. It is attached to the Super Sundeck Bracket, not on the 90 degree C Channel Bracket attached to the main walkway. The 7� - 7-1/2" length is used when more than one Sundeck or Super Sundeck are inline at the same location, attached to the sundeck bracket. With the framework pipe, both C Channels weigh 22 pounds.