Best way to support your cover in rain, snow, and icy conditions.  Provides evenly distributed ventilation along the entire underside of the mooring cover.  Slim design, visual appeal.  Provides a higher volume of airflow per square foot of cover, more than any other fixed vent.  Design maximizes airflow across the entire underside of the moorng cover.  Changes in wind direction have no significant effect on vent performance.  Available in Black, Blue and Gray. 

It works well with the Star Brand 3-in-1 Support Pole (Sku#49-3011 / Item #13017).  Also offered in the "Accessories" Section.