Airflow Floor Vents Brown Plastic Airflow Floor Vents Solid Brass Airflow Floor Vents Suitable for Easy fit into suspended floors. Supplied with long spigot. Brass option provided with fixing screws. Suitable for gas appliances and D.F.E. fires up to 27kW Net Louvres angled in one direction so vent can be sited such that no unsightly underfloor space is visible to the occupant. High quality polished brass option provides occupant with stylish alternative. Possibility of draught is reduced as vent can be placed close to the appliance. Quick Easy fit installation. Complies with BS5871 (1991) Pts. 2 and 3 and BS5440 Pt. 2. 2000