PSL Tracklok™ Seismic bracing Secures partition walls and glazing lines, under ceiling to slab above. Designed and tested to mitigate risk to life and property. Applicable to all seismic zones and all seismic loads. Meets or exceeds all national code. Low profile allows installation in partition and glazing heads. Engineered to eliminate ceiling grid interaction and to protect warranty. Designed to absorb seismic energy, reducing partition wall failure.