COVID-19 Update: We are open & shipping orders! We are working hard to ship as quickly as possible, while ensuring the safety of our associates. Please note: we have closed our Bristol retail store. Click for details
Jamestown Distributors(800) 497-0010
Click to watch the JD Search Tutorial video & learn
all about searching and browsing on Jamestowndistributors.com
Install Vetus mushroom vents in cabin overheads to ventilate closed areas and minimize condensation below decks. Mushroom vents are available in 3 different sizes. All are made of 316 stainless steel with a polished high-gloss finish. Each includes a synthetic mosquito screen and counter flange.
The item was added to your wishlist.
The item was added to your shop cart.
If this ventilator were accidentally stepped-on, will they break?
They are 316 stainless steel pretty rugged and would probably support up to 150# guessing, but could damage the screw base with heavy weight on it. When closed all the way it would support a lot more.
JD Tech Team
what is the diameter of this vent?
5", but I wouldn't suggest buying these. Ours broke in one season.
513/16" is the diameter of the hole you need to fit it. You can go to the Vetus site and see all of the dimensions.
I have a flybridge boat and need to vent the head. I am considering using the vetus mushroom on my cabin side. My question is can these be mounted vertically? will they leak?thanks in advanceLucien Ciaglia
I mounted mine horizontally so I am not sure if it would leak doing a vertical install! You might try a flange to connect the hose and a clam shell to keep the rain out! Hope this helps
They do leak when mounted sideways. also if it gets cought on things and people as the pass by. the muchroom is attached to the mounting ring via fine metal mesh and tears away and then its pretty much broken. only good for out of the way place that wont get any traffic, so basicaly not really good. they look nice though. maybe spend a little more and get one of those solar jobies that look kinda the same. im replacing the ones i installed with those. hope this helps.
Yes, more than likely you will experience leaks if these are mounted vertically. Rain will no doubt bounce around the design and into the boat.
Hi Lucien,I really do not think they will do well on a vertical mount,unless they are protected from water,like under a overhang.I have to close mine in wet situations on my horizontal mounts.I hope this will be helpful info..Paul
The opening that I have is 4" in diameter. What size of vent will I need?
Vetus Mushroom Vents come in a number of sizes. I had a 4" opening in an aft deck hardtop and it fit perfectly. You really shouldn't have a problem after ordering the correct size. Vetus tech. info. page will give you the exact measurement requirements. Safe Boating!
None of the mushroom vents have an exact hole opening measurement of 4". Go to the Jamestown site and check the schematic for the mushroom vents for the three different sizes of Vetus mushroom vents and chose the one the will work best for you.
Can anyone help? I want to use a vent for ventilation of my gas cooker. Can it be closed/lowered from the outside? I won't have access to the screw on the inside as it will have the same ducting as a clothes dryer. Thanks.
You can turn the top clockwise to completely close the vent to outside air or moisture. It will not substantially lower the cap, a little, but not more than 1/4".
Yes, it can be closed from the outside by turning clockwise.
what is the dia. of hole required? I have 2 deckplates that are 4 1/2 inch, looking for ventilator that will fit that hole
Depends on which size . There are two sizes. You will probably need the larger vent. Did you consider the powered vent? Works well.
Sorry I am away from the boat now but I used an existing holding tank pump out hole on deck which was standard size. Sorry I couldn't be more precise.
How long is the trim ring interior tube?
Screw down flush base, not trim ring. I glassed a short collar in the through hole to seal exposed deck ply. First one I had installed in 1980 just had cut deck edges sealed over with epoxy layer and I had to reseal it every 2-3 years because anchor chain rode beat up the epoxy layer. Use an inserted collar or deck ply can delaminate and/or dry rot.
The tube extends enough to connect your hose to, maybe 1 1/2 inches, best to connect the hose up before mounting it. I used pool hose for the run and rubber ends from Natures head for the connections! Hope this helps.
Don't understand "long" here but the depth of the ring was probably an inch and a half. It was not deep enough to go all the way through the deck so I put a piece of gorilla tape on the inside of the tube to create a channel and filled that channel with epoxy thus essentially extending the depth of the tube to the surface of the deck.
What size diameter are the vents and the openings for the vents?
Open up this item on our website and click on the diagram with the dimensions.
Would this work good for a stove top vent on a tug boat?
Well without knowing what size hose you have running to it I would say the vent listed is very high quality and very easy to install. We leave ours open all the time with no problems so far. Hope this helps. We use it for our Composting head which has a small fan running 24/7 and handles that application just fine.
I have used this vent on the fore deck of a small sail boat. It works perfectly to vent moisture from the cuddy area. I would think that this vent would be rather small to vent the area of an active stove. Perhaps the larger one would do. Look to the square inches of vent. The cap does keep rain out of the boat. The cap is adjustable up and down. I hope this helps.jim
I have a fiberglass rv and a closet that needs to be vented. would this vent be good for a vertical wall application? How do you think it would preform?
I installed this on the deck of my sailboat. It was very easy to install. I think it would work well vertically as well.
I would buy it again the last one lasted over 10 years
The only issue with the newer unit is the closing knob spins off before it closes some lock-tight should take care of it.
Spot welds failed after 1 year
I like the look and ease of installation of this unit, but the spot welds that hold the mushroom cap to the frame and screw failed after only one year. The spot welds were very thin to the point of being useless.
A s advertised
Suggestion, make a template out of plywood to hold saw bladein place. Use a drill saw blade.
Works as advertised
Rhodes River, MD
Well made and good quality stainless.
I used this to vent our new composting head. Just the right size.... closeable too!
Puget Sound- now called The Salish Sea
No more hole!
A guest on my Bavaria 820 recently kicked the mushroom vent off of my forward hatch. Upon being freed from it's assigned position, it of course immediately dove straight down into Davey Jones' locker! It's departure also caused a 3.25"+ hole over my berth which is not conducive to restful sleep.This mushroom vent is a very workable replacement. Although the original vent was European (read metric) I was able to easily retro this vent to replace the original. It opens and closes easily and appears to be an excellent choice of replacement.
Took me three years to find one the proper size for my vent hole. Easy to install and use looks great, and is very effective. Need to be careful when it is fully open, it can be a little flinsy.
The Vetus unit is the heavy duty alternative to all those plastic vents out there. The plastic units are not cheap and will not last like these SS vents. I like the rugged simplicity and good looking design.