They include rubber fittings, but not the outer metal enclosure. As far as I know, those aren’t essential. Things you’d need otherwise:
- An older battery box (they’re easy to find on fleabay) - the crossover tube is fitted to the older filters.
- A piece of 1/4” threaded rod (or all thread, depending on your hardware store) and nuts to fit. 241mm is the stock length.
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