Caravan?

Now that depends on the type. Standard size manufactured fitted translucent typ doble skined.
remove the handle screws pull the handles off the lugs feed the rooflight through the gap take it to a c/van spares shop purchase new rooflight complete with new handles. Reverse removal inst. you might find it a problem getting the handles back on the lugs don't think you've got the wrong one some drop on some are a pain, persevere.

bob
August 2009