Hi, I want to upgrade a single panel non finned steel radiator in my kitchen as its theoretical heat output is inadequate and the kitchen is too cold. As it dates from about the 1980s it is of "unusual" dimensions (at least for modern units - but standard back then) 735mm high x 640mm wide. As the pipework comes from concrete floor with minimal copper pipework, for least messing with pipework it would be handy to replace with a 640mm wide rad but either a double or taller single (height no problem). So I could then fit like for like. Does anyone know (a) whether they are still available new (b) where I can get them from and if they are available (c) what sizes are available?