Fuzzy between screen and window

Question

Could you tell me what the fuzzy stuff is that slides into the screen. To keep dust dirty and bugs out. I need to replace that stuff but don't know what it's called. Thank you

Tom · Accepted Answer

This is a wool pile type of weatherstripping. I'm not sure what you have, exactly, as there are many different kinds. It ultimately comes down to size. You can see our entire selection here.