You could easily buy a few rolls to fit some to your existing vents.
Roof vents that keep snow out.
When mounted high and near the peak of the sloped roof the round back static roof vents will exhaust hot air from the attic in the summer and moisture from the attic air in the winter while preventing rain and or snow from entering the roof.
Roofers often complain that roof vents battered by storms can fail allowing blowing snow and rain to penetrate the attic.
So there s a type of vent that s called a filter vent.
Insects and animals as well cannot get past the design of this roof vent.
Fire protection vents and filters prevent fire embers wind driven rain dust debris and nesting animals and rodents from entering your home through the attic vent.
In cold climates the primary purpose of attic or roof ventilatin is to maintain a cold roof tempeature to control ice dams created by melting snow and to vent moisture that moves from the conditioned space to the attic.
The original cobra ridge vent is just a roll of the filter type material available in 25 and 50 rolls.
Melted snow in this case is caused by heat loss from the conditioned space.
The vents that we use are cobra snow country advanced made by gaf never had a problem with them.
And it s made by certainteed.
Place a deflector over the opening of the vent to keep rain from blowing through the opening.
Deflectors are available in many sizes configurations and colors to match your existing vent cover.