Seachoice Clam Shell Vent, 3-3/4 in. X 3-3/4 in., Stainless Steel

Good build and polish. Alloy seems good as well (no rust after soaking in salt water for days on end). I say thin, which it is, but it's plenty for an anchor chain locker.

This was used to replace an old cracked plastic vent cover on my boat. It definitely looks a lot better and is much sturdier than the old one. Was not mounting on a flat surface so I did have to bend it to fit on a curved surface, but the material is malleable enough to bend to shape.

Item just as described, perfect size for feeding in power pole hoses on my boat.

It not quit as large as I thought it would be, but it is very good quality!

On the boat for 3 months and already rusting from inside shell. Leaving stains on the boat, must be very cheap stainless!