100mm Through-Wall Ventilation Kit with 500mm Duct and Backdraft Grille | For Bathrooms, Kitchens, Toilets and Utility Rooms, Insect Screen, Black Exterior Gravity Louvres, Reverse Airflow Reduction

Complete Three-Part Wall Kit - Includes a white 500mm rigid duct, white indoor grille with insect screen and black exterior grille with gravity-operated louvres. For Domestic Ventilation Projects - Creates a direct 100mm airflow route through a compatible exterior wall in bathrooms, kitchens, toilets, cloakrooms, laundry areas and utility rooms. Indoor Grille with Insect Screen - The 170 x 170mm room-side grille has a 100mm round collar and provides a neat internal finish while helping restrict insects from entering through the duct. Black Exterior Gravity Grille - The 190 x 190mm outdoor grille has a 100mm connection and moving louvres that open with outward airflow and help reduce cold draughts and reverse airflow when the system is idle. 500mm Rigid PVC Duct - Measures 100mm internally and 103mm externally, and can be carefully shortened to suit the wall depth. The outdoor cover includes 4 screws and 4 wall plugs.