All Plastic Construction Mushroom vent with water guard (includes screws) TOP DIAMETER.: 5 5/8” Found on various different Keystone and Heartland RVs and Fifth Wheels Part Type:Exterior ...
If this sounds like an unlikely scenario, consider the fact that you might already have these openings — let's call them attic ventilation — and some of them might be covered with box roof vents.
(Bonus: Once your attic floor receives additional insulation, you'll see a savings in your energy costs.) Proper roof ventilation is a permanent ice dam solution that protects against ice buildup.
The warmer weather expected over the next several days may be a welcome change for Minnesotans, but winter-weary consumers should also brace themselves for the possible return of bothersome ice ...