Manrose 300mm/12inch. Commercial Automatic Fan - Grey - COMCW300A
Available in 150mm (6") 230mm (9") and 300mm (12"). This range of Spigot Fans gives the unit a unique slimline profile of 66mm on the 150mm (6") series up to 81mm on the 300mm (12") series, and are suitable for connecting to Ducting.