"Needed to replace an ugly old single panel 7 foot (2135mm) radiator without shifting the pipework. Using two 1000mm radiators in series with linking pipes top and bottom provides a flexible solution much more cheaply than trying to find a long radiator and using extension tails etc. Using 300mm high double convector gives greater heat output and gets a "cute" rating from the customer. Product is fine and it is nice to find sturdy coach screws for fixing BUT the wall plugs supplied need a 9mm drill. No, they won't fit into 8mm and won't hold fast in 10mm. And I can't find any form of 9mm masonary bit in the Screwfix catalogue! SO if you want to use these Kudox radiators better order some 10mm plugs as well."