Air vents can be easily closed or opened by rotating the disc in the centre. Round soffit air vents can be perfectly installed on the ceiling or wall, also very easy to disassemble for conveniently cleaning.
eBay
Airflow 100mm (4 inch) Fixed Grille in white
eBay
Ceiling Vent. Also suitable for flush installation on walls and ceilings. Material: ABS. Very suitable for range hoods, fans, etc. The actual of the product may be slightly different from the picture shown on the website, which is caused by many factors such as monitor brightness and light brightness.
eBay
【Wide Coverage】Designed to cover wall or ceiling openings and duct vents, this grille provides a comprehensive solution for air circulation and ventilation needs. Size: 100MM,125MM,150MM. Efficient Ventilation Grille Durable PP Material Air Exhaust Outlet Fresh for Wall Ceiling Openings Vermin and Rodent Protection.
eBay
An external wall mounted louvered grille that connects to 4, " duct or wall sleeve. The grilles donward facing blades face downward to protect against rain and wind. Louvered blades to reduce the effects of wind and rain.
eBay
Extractor Fan Grille Fixed Vent Wall Cover White for 4" 100mm Ducting. Circular Flange on rear to fit 4" ducting. WHITE EXTERIOR WALL GRILLE. Screw Hole in Each Corner. We pride ourselves on our reputation for ensuring all orders are quickly processed and despatched.
eBay
For use with 100mm / 4" ducting systems. 100mm / 4" Fixed Grille - Beige Suitable for internal or external mounting. Duct Size 100mm. Beige fixed grille with flyscreen. Complete with fly screen. Can be mounted on the ceiling or wall.
eBay
Round soffit air vents can be perfectly installed on the ceiling or wall, also very easy to disassemble for conveniently cleaning. 1 x Air Vent Covers（or 2 x Air Vent Covers）. The vent is perfect for ventilating bedrooms, bathrooms, kitchens, caravans.
eBay