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Donald Stainless Steel Cowl Vent - White Interior

3" Model • Heavy Cast AISI 316 Stainless Steel

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Both the cowls and the rings are made of heavy duty, investment cast, stainless steel. These cowls can revolve and be removed without any tools simply by loosening the upper ring by hand.
A Monel mosquito screen and a solid stainless steel cover plate to close off the cowl ventilator can be purchased as options. See Accessory Products, below.

Comes complete with threaded collar nut ring and male mounting ring.
4.65"² free air flow area

How these vents are mounted...
These cowl vents are consist of a "deck" ring, and a cowl with a loose collar ring (aka "nut"). The "deck" ring is permanently mounted to the top of a dorade box, and the cowl is then placed on the deck ring and secured by tightening the collar ring.

The deck mounting ring is secured with (4) flat head fasteners, and has coarse external threads.
The female-threaded collar ring is loose on the cowl, but captured by a flat flange ring which is screwed to the bottom of the cowl with 3 screws (see image). The cowl is placed on the deck ring, and the collar ring is then turned down by hand or with the supplied deck key until tight. The collar ring can be loosened at any time to allow the cowl to be rotated as necessary.

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