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Sealed vs I/B Sub

To add to Davids excellent points I think the OP was using these to prevent physical damage to the interior of the compartment. These SSI units are very nice for this purpose. PolyPlaner also make a set as well that will handle just about all the JL line as well as others.

On another note, just got my Bimini Fling shirts.....they look awesome.
 
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