On occasion, a partition wall or a glazing line placement may coincide with the main runners or nogs of two-way grid. In this instance there would be no way for a TRACKLOK® to pass through, with 10mm of clearance from the ceiling. GAPLOK™ allows you to take a 40mm section out of the grid, clamp GAPLOK™ to bridge the gap and reinstate the grid’s structural integrity and allow the clearance required.