US Patent 7850150 Support grid apparatus and method

A support grid having a longitudinal axis, having a frame. The frame includes a series of columns that extend generally parallel to the longitudinal axis and a series of girts that intersect the series of columns to form a plurality of windows. The support grid also includes a first retainer integral with the frame. The first retainer extends from the frame into at least one of the plurality of windows at a first axial location. The support grid also includes slider portions that extend in opposed relation for the frame into the at least one plurality of windows.