Air brick vent grille inset in holder 204mm x 60mm ducting

Air brick vent grille louvred inset in holder 204mm x 60mm flat channel ducting • Grille Free Area 7,680mm² • Suitable for flat channel ducting external 204mm x 60mm +/- 0.3mm • Colour grille options beige brown terracotta white • Material plastic polypropylene - grille polystyrene - holder • Temperature range max +60°C min -15°C • For use with 204mm x 60mm rectangular ducting ventilation system • Connector type 1 female fits over the 204mm x 60mm flat channel ducting