Pocket Dr Frm Hd 2000 Univ 8/0,L.E. JOHNSON PRODUCTS" /> Designed to carry heavy solid core doors (up to 400lbs each) in standard 2 x 4 timber or steel frame Versatile frame and can be adapted for use in non standard wall thicknesses, block masonry walls and Aluminum extrusion track, mill grade finish 12-14 gauge steel components, zinc trivalent plated Nylon wheels encapsulated sealed ball bearing