What vents are these and should I be worried one of the covers is missing?
I'm getting a lot of cold air in one of my kitchen corners. Anyways looking outside in my backyard, there is 2 vents (see photo) in the general vicinity of where the cold air is coming in. I'm wondering if the fact 1 of the covers is missing is causing the cold air to get into the house. Any idea what these vents do, and would this be my issue?