The R2-44S Seismic 2-post open frame rack incorporates a heavy duty 3/8" thick steel base that adds structural integrity to the steel frame. Top pattern holes accept a variety of cable ladders with no additional adapter required. Ships assembled and ready to install. 10-32 threaded front and rear, with numbered rackspace increments. Includes 50 rack screws. Features: Fully welded steel construction for structural integrity 1/8" thick steel rail channels are 10-32 threaded front and rear Seismic...