Black vent

Could anyone have any idea were we could obtain another black fridge vent on the o/s for a  vw t25 1988 hightop..it is made of fibre glass We are having the van resprayed ,been on the internet no luck .your my last hope thanks

Not that many T25s here so could you give sizes to help, meanwhile is this any good?...


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Have you tried these people?

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thanks for the links,the first one the vent is too long and to short for the height.
second one really good but no vent but will keep on looking. 
the measurements for my vent are 470mm by 95mm.
once again thanks for your help