AEROTEX CLIP-IN-CEILING (Plain and Perforated) The clip in system is probablythe most widely u used metal tile ceiling system. The tiles, manufactured to fine press tool tolerance are clipped into a cocealed tee bar grid. Tiles are automatically leved in the grid by special “Pip & stop “registers, whichare pressed into the side flanges of the tiles durning manufacture. Panel shall measure (2 x2, 2 x 4) or custom size (__x__) with square edge detail, with 90-degree upturned legs, and formed to allow-insertion of leaf springs in horizontal legs with pre-punched holes and clipsin pre-punched slot and vertical legs, on opposing sides for securing panels to to and concealing sus pension grid.