I'll post pictures later, but I ordered 4 pilasters ("standards") in 4 foot lengths from
Hardware Distributors along with the clips.
I screwed the pilasters to 2 pieces of 4' length lumber shelving that we already had, stood them against the sides of the hanging closet. I purchased a 4' x 16" board for shelving at Lowes, then cut it to lengths that force fit the shelves to hold the sides in place.
There's no way that luan is going to hold any weight up, but the two side pieces do the trick.
I wish I had used the same shelving board to attach the pilasters to, it would have looked so much better. :/
Rectangular rubber made baskets serve as 'drawers' and keep things from tumbling around while towing.