This hardware lets you support the track and universal mount strip door hardware from the floor. The B2367-1 Splice/Floor Support and B941-1 Corner Floor Support are used with the universal mount strip door hardware. The A256 columns are 1-1/4 inch square by 12 gauge wall tubes. The A256 columns telescope over the tubes on the track supports and base plates. The BS12Base Plates are 12 inch squares and are made from 1/4 inch thick plates. The BS6Base Plates are 6 inch squares and are made from 3/16 inch thick plates.