This Kair Louvred Grille is designed for efficient air extraction with a 125mm / 5-inch round male spigot that fits inside most compatible pipes and hoses. It features fixed louvres and an integrated insect screen to prevent pests from entering. The grille is made from durable white plastic and is suitable for various ventilation applications, including bathrooms, toilets, kitchens, hydroponics, and in-line extract fans. Installation is straightforward with a push-fit design, and it can be secured with sealants or tape. Compliant with Part F Building Regulations, it offers excellent airflow performance, independently tested for quality. Kair products are manufactured in the UK and are compatible with an extensive range of ventilation components, providing a complete system solution. It can be used in conjunction with rigid ducting like Kair SYS-125 for optimal airflow and durability compared to flexible options. The external dimensions are 155mm x 155mm, with the option to cut off the rear spigot for a flat surface installation.