The Prestigious Pocket Door Frame More durable than any other wood frame on the market Keeps the styles and ribs straight and square Durable Construction The Frames are constructed with primed finger joint pine material that is straighter, cleaner, more consistent and more durable than any other wood frame on the market. Holds True and Square Our plywood inserts act as a ledger to keep the styles and ribs straight and square to hold true for easy installation. It also serves the purpose for glass pocket pocket doors so the raw wood inside the pocket isn't visible after painted black. Better than the Competition Other frames are constructed with rough, bowed and twisted materials that throw the body out of square and cause the finished wall to be flimsy. This type of installation process is a nightmare, causing ghost doors and unacceptable trim outs.