Installation with 20mm 25mm 32mm 40mm 46mm hole size requirement; enjoy a fresher atmospheres with this kitchen tool that double as essential component for well ventilated Featuring all metal body with reinforced paint, this duct fan operates quietly while providing strong suction and with metal Elevates air and efficiency in space with powerful 58m³ Inlines Pipe Fan, for extraction and ventilation for homeowners and professional, this Extractors fan to those who demand clean environment in areas such as kitchens and workshops in application, the fan for use in restaurants, internet cafe, cinemas, and other commercial spaces requiring effective air circulations and removal, Manufacturer: kokdid