Internal chrome ventilation grille round 4" 100mm duct for extractor fan bath 722166061052 | eBay
Domus Ventilation 100mm 4" Fan Front Cover Chrome (ANC710A) | CEF
Awenta Escudo Front Panel Extractor Fan Cover - 4"/100mm - Satin | ElectricalDirect
Manrose FC100C Extractor Fan Cover - 4"/100mm - Chrome Suits XF100 Range
Ventilation Grille Round Chrome or White 4" 100mm Duct Extractor Fan Bathroom (White) : Amazon.co.uk: DIY & Tools
100mm (4 inch) Dia Grey Plastic External Fixed Blade Vent Cover Grille (155x155mm External Size) Extractor Fan Air Ventilation External or Internal Wall Grille for Use Ducting Systems with Flyscreen : Amazon.co.uk:
Ventilation Grille Round WHITE 4& x22; 100mm Duct Extractor fan Bathroom