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.



  • Provide clearance from two-way grid lines enabling TRACKLOK® to be installed correctly.
  • Provide a method of re-instating the structural integrity to the two-way grid whilst providing the necessary clearance from the two-way grid, required to install TRACKLOK®.
  • Allow specifiers and installers to effectively brace off partition walls to safeguard people from loss of amenity caused by the behavior of partition wall systems during seismic activity or fire.
  • Ensure partition wall systems comply with building code regulations and ceiling manufacturer warranty requirements.

Features and Benefits

  • Provides for the re-instatement of the integrity of the two-way grid.
  • Designed and tested to work with all ceiling grids. 
  • Applicable to all seismic zones and all seismic loads.
  • Meets or exceeds all national code requirements.
  • Engineered to eliminate ceiling grid interaction and to protect warranty.
  • Designed to accommodate TRACKLOK® while providing required clearance.


  • Commercial Interiors
  • Offices
  • Schools
  • Hospitals

Installation Guide

Following is the suggested solution to seismically secure partition walls, which are situated along the grid lines and requires the use of GAPLOK.

  1. Set out head track (clamp or screw temporarily).
  2. Locate TRACKLOK® placement.
  3. Cut and remove the 35mm section of grid between the screws.
  4. Insert GAPLOK unit as per specification.
  5. Insert TRACKLOK® unit as per specification.
  6. Brace off the TRACKLOK® unit as per specification.
  7. Remove temporary fixings.

Product Downloads

This product is listed in the following categories

Accessories - Walls Walls - Seismic Wall Accessories

  Daiken CBI Gridlux            
© 2019 T&R Interior Systems | Site by 3Rings