-
Dometic Master
6,674 Answers
- Posted on Jun 02, 2011
Re: I am installing a Dometic Brisk Air A/C unit on my...
The grey ones I believe you are asking about are thinner than the black one, so when the black one is compressed when tightened, the grey ones just add a little support at each end. I'd leave them on, can't hurt.
×