So make sure what you are ordering is what you require, if unsure dont order. 100, 125mm, 150mm, 200mm, 250mm, 315mm 1 Phase Metal Inline Centrifugal Fans. High Quality External Rotor Motors. Maximum running temperature for the fan motor is 60 deg C. It is not recommended to constantly run a fan at its maximum running temperature and really should be intermitent and certainly not to run a fan at the higher temperatures at slower speeds with the speed controller. These fans are manufactured with a Strong Galvanised Pressed Metal Casings complete with detachable mounting foot bracket and incorporate the reliable, long life, external rotor motor c/w a high efficiency centrifugal impeller. This range of fans are excellent for long ventilation ducting runs or with multi extract or supply air applications and easy to install, ideally suited for a wide range of general commercial and industrial exhaust or supply ventilation applications. Ideal for Hydroponic Ventilation with the high carbon filter resistances, can also be used for Supply or Extract applications. This listing is for the “1 Phase/240v fans” and are suited to a wide variety of discharge and supply air applications in the building services sector, in a time when we are all being more vigilant for the “Air Quality” in enclosed spaces to combat the spread of air born viruses we are now all very much aware of, such as Schools, Workshops, Warehousing, Restaurants/Cafes, Sports Halls, Industrial units and Commercial Catering Kitchen Extract and Hydroponics systems. 1 00 mm dia In-Line Centrifugal Fan, 1 Phase, (Metal Cased) Powerful c/w Mounting Foot. Single Speed and Speed Controllable. 125mm dia In-Line Centrifugal Fan, 1 Phase, (Metal Cased) Powerful c/w Mounting Foot. Single Speed or Speed Controllable. 1 50 mm dia In-Line Centrifugal Fan, 1 Phase, (Metal Cased) Powerful c/w Mounting Foot. 2 00 mm dia In-Line Centrifugal Fan, 1 Phase, (Metal Cased) Powerful c/w Mounting Foot. 25 0 mm dia In-Line Centrifugal Fan, 1 Phase, (Metal Cased) Powerful c/w Mounting Foot. 315mm dia In-Line Centrifugal Fan, 1 Phase, (Metal Cased) Powerful c/w Mounting Foot. In a time when we are all being more vigilant for the “Air Quality” in enclosed spaces to combat the spread of air born viruses we are now all very much aware of. We do not offer Collection as an option, all items dispatched only. Once inspected or tested to prove the fault, a replacement part (simular or equiverlent) will be sent free of charge.