We went to Lowes and Home Depot to look for a good system to mount the frame to the wall so that it could pivot out of the way when not in use, and have the 15 degree angle when in use. We decided to mount a 10’ chain link fence top rail (https://www.lowes.com/pd/Galvanized-Steel-Chain-Link-Fence-Top-Rail/999989216) and mount it to the frame with some tension straps. (https://www.lowes.com/pd/Blue-Hawk-Gray-Metal-Fence-Tension-Band-Chain-link-Fence/3160585).
I took some scrap 2x4 pieces and cut them about 2’ long. Then I used a hole-saw, jigsaw, or bandsaw to cut a u shape notch on the top of one side. I mounted the 2x4’s with the “u” facing the wall and facing the roof with some ledger bolts through the 2x4’s in the wall.
Amazingly, it was perfectly level when we lifted the frame into place. It lays flat against the wall when not in place.
