Ceiling Vents in the Salon of my 346 aft cabin

[Malone1956]

We just took possession of our 2002 Carver 346 Aft-Cabin. We're just getting familiar with things and I noticed a pair of ceiling vents mid way of the main salon. Can someone tell me what they're for or how they operate? We are loving life tonight on our first night.

[DanM]

If they are like the ones on the ceiling of the 396 they are connected to under the brow of the bridge. While underway they provide spray protected positive air flow/pressure in the salon and help keep out any engine room gasses and station wagon effect that might leak past the closed salon door. I keep mine closed when stationary which keeps the AC in and the spiders out. It's a thoughtful addition I have not seen on other boats

[NHCarver346]

Does anyone know the PN for these ceiling vents? Mine are yellowed from UV and seems like an easy replacement to freshen up the salon. I was also wondering where these connected, have not seen any spiders coming down them but spiders do love boats!