The Head Saver creates a protective "roof" that virtually eliminates injury! A key problem during batting practice is ceiling ricochet injuries which protective screens cannot protect against. The Head Saver is easy to use and assemble. The innovative, easy to attach design features twin J-style hooks spaced 18" apart. These hooks attach to the top of your L-screen, while sliding support arms lock into place. Head Saver fits nearly any size L-screen top measuring 24"-60" wide and frame tube diameters up to 2"OD.