Hoffman PFBK PROLINE¢ Floor Mounting Brkt, Steel/LtGrayProvides a structural method of bolting a PROLINE¢ frame to the floor. Fits all frame sizes. Made of 12 gauge steel with plated finish. Kit includes four brackets and mounting hardware.Not for use on colocation frames, which include welded-in floor mounting brackets. Product Specifications BRANDHoffman® MANUFACTURERS PART NUMBERPFBK CONSTRUCTIONSteel DESCRIPTIONProline Frame Floor-Mounting Bracket COLORLight Gray FITS--