Cavi60 Type V170 60 minute fire rating cavity widths up to 170mm wide. Masonry applications Cavity tray, Cavity tray unleaded, Cavity tray with lead, Cavity tray horizontal, Cavity tray refurbishment, Cavity tray gable abutment, Cavity tray conservatory, Cavity tray building regulations, Cavity tray NHBC, Cavity tray non combustible, Cavity tray NBS, Cavity tray flat roof, Cavity tray pitched roof, Cavity tray roof abutment, Cavity tray retrofit, Cavity tray rendered wall, Cavity tray roof, Weep, Weep rendered wall, Weep adjustable