I am replacing the shower skylight. My replacement is thicker than the original, but did not come with an inner dome. The original has an inner dome, not sure if I can get it separated from the old...
Ours is double that is 1 piece. We previously had vent covers that were double and when we ordered new, they were thinner single covers. We have a lot more noise thru the new ones than what we did the old double covers. Would not want a single over the shower based on the quality of the vent covers.