This is the brace to hold the weight of the dome when it is slid all the way off. Note the diagonal 2x4 and that it is anchored on the bottom of the frame and the opposing UPRIGHT - NOT the top. This is very important and provides great strength.

You can also see two of the metal angle braces here between the 2x6's and the 2x4 of the brace frame.

May 22, 2008