Freestanding walls are used for stage and television studio props. They are also built for trade show booths. While the front side of the wall is painted to look like a real home or retail store, because the wall is temporary, the most important feature is that the prop makes the wall 100-percent stable. These props should attach and detach from the wall with ease.
Cut each two-by-four into three pieces — two pieces 36 inches long, and one piece 48 inches long. One of the 36-inch pieces should have 45-degree bevels on each end that angle toward each other.
Screw the 48-inch and the square-ended 36-inch long pieces of two-by-four together into an “L” shape. Take the builder’s quick square, and make sure the two wood pieces form a perfect 90-degree angle.
Screw the third piece of two-by-four that is beveled at each end to the back side of the “L.” With the third piece attached, the two pieces are held in the “L” configuration, and look like a large “L” bracket that could be used to prop up a countertop or workbench.
Place the 36-inch side of the “L” along the floor, and the 48-inch piece flush with the back of the wall. Place the wall prop behind the wall that needs bracing, and screw the prop to the back side of the wall. Screw the prop into the studs that form the wall framing.
Place a bag filled with sand on the leg of the “L”-shaped prop sitting on the floor. Even though the prop holds the wall upright, the wall could still fall forward. A 10-or-15-pound weight on the end of the prop will keep the wall upright even if it's bumped or used to display a few pieces of store merchandise.
Here is a trick to use when setting up multiple wall sections. Assemble the sections in a zigzag pattern, rather than in a straight line. The configuration will help prevent the wall panels from falling over if they are bumped from behind.