FV144 Large Ventilated Cavity Barrier is a specially formulated fire rated rock mineral fibre section with an integral high expansion intumescent seal attached to the leading edge, suited to an open state cavity with a maximum air gap of 44 mm.
FV144 is a fire rated product designed to act as an external wall cavity barrier at the required locations such as compartment floors, around windows, doors, etc. and within uninsulated cavities requiring permanent (open-state) ventilation. In the event of a fire FV144 will expand to close the final gap between its leading edge and the internal face of the cladding. It provides effective fire resistance, for integrity and insulation for up to 180 minutes depending upon the construction of the external walls. FV144 is designed for use within a designed cavity of up to 450 mm, and once installed will close the remaining free air gap (in front of the 6 mm thick cavity barrier) of 44 mm.