Standard thicknesses are 24 and 28mm, occasional older systems around still have 20mm. As important to note is the colour, even if its white there are several shades.
Peter.plasway@btinternet.com
www.plasway.co.uk
Peter Smith
February 2009
theres 20mm,24mm and 28mm,make sure you buy correct one as it wont fit,hope this helps
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