Temporary Stair Voids Protection – Save Lives, Save Money Introduce our new Temporary Stair Void Protection System which is for sales at this moment.  The package includes the following: Extension Brace 700-920mm Extension Brace 920-1250mm Extension Brace 1250-1800mm Extension Brace 1800-2200mm 1915*600mm Plank with Hatch 2500*600mm Plank with Hatch 2500*600mm Plank Closed Horizontal Bracket for