Whether you need to fit out a door jamb or a window, these Type A plastic frame packers are just the tools you need. The Type A Frame Packers’ extra wide girth gives you just that custom fitting you need to level off that installation. The rounded edge also makes this product apt for a variety of different applications. The combination of its ‘U’ shape and the retainers on the side make sure that it doesn’t fall off from where you put it.