excellent just confirmed what i had already measured fronts 6.5 " rear 5" many thanks i got a bit confused cos on another citroen forum i was being told fronts 130mm and rear 100mm and that kinda put my mind on overload thinkin i was a total cnut :D many thanks for that bit of help B) next problem/question is how do i get to the heater thingy as when i put it to demist the window nothin comes out the upper vent ( window ones ) so assuming it is a slack cable / or something come off i dunno ( does it show im no mechanic ) :D