I have just bought a double 4ft radiator and it is going onto a plasterboard wall and I was wondering if the screws that I have will be strong enough to hold it, a plumber will do the job I was just trying to help out a bit, so I bought plasterboard rawlplugs the type that self screw into the wall then a screw goes through the middle of it and locks (I hope) have I done the right thing or do I need different fixings, any help is much appreciated