Ltpgtthe intervent nvf150p 150mm 6quot extractor fan with pullcord switch by manrose is designed for wall mounting only it is suitable for larger bathrooms utility rooms shops offices restaurants to be operated by lightswitch with set overrun timer but will operate automatically when rooms relative humidity level exceeds 75ltpgt ltulgt ltligtpullcord switch suppliedltligt ltligtfor kitchens and larger bathroomsltligt ltligtwallceiling mounting ma