Additional Information
Features
All-welded 304 stainless steel construction with polished finish. Adapts to 3" or 4" ventilation systems. Predrilled with six mounting holes to accommodate #8 screws. 11-5/16"L x 4-3/8"H x 3/4"D.
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Specs
Unit Weight | 0.80 lb |
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Brand | Attwood Marine |

WARNING: Cancer and Reproductive Harm
For more information, go to www.P65Warnings.ca.gov/product.
Reviews
Q & A
All-welded 304 stainless steel construction with polished finish. Adapts to 3" or 4" ventilation systems. Predrilled with six mounting holes to accommodate #8 screws. 11-5/16"L x 4-3/8"H x 3/4"D.
Show moreShow less
Unit Weight | 0.80 lb |
---|---|
Brand | Attwood Marine |

WARNING: Cancer and Reproductive Harm
For more information, go to www.P65Warnings.ca.gov/product.
I need 4 vents 14 1/8" x 5 1/8" outside dimension and 11 7/8" X 3 1/4" inside dimension, 4 louver
Please contact our Technical Team at 1-800-334-6541, with additional information.
Date published: 2017-08-24
97 Mariah Vents are 2'3/4 tall 17'1/2 long. Do you have that size ?
Unfortunately the largest we have is 17-1/4" x 2-1/2". Those would be item numbers 70747 and 70748
Date published: 2017-08-15
What size vents do I need for twin repose red 45 egg harbor sf with 450 hp 496 ci carborayted engines
We do not have any specifications for the size the ventilation will need to be for your application. I would suggest contact the boat manufacturer for these specifications.
Date published: 2016-07-11
I have a 1987 Silverton what size vent do I need or what do you recommend?
The key to finding the right size vent for your boat is to determine the location and measure the space so that you are able to maximize the space for the best ventilation. The Attwood Stainless Steel Louver Vent will require a space of 11-5/16"L x 4-3/8"W x 3/4"D.
Date published: 2016-06-28
what size vent do i need for a 12 inch by 3 1/2 cutout?
The vent will need to be slightly biger than the cutout, because most of them will have screw holes that will be installed just past the cutout. So anything that is bigger than the cutout will work
Date published: 2015-09-23