What are the holes in the vinyl siding? (About two feet up and gray in color by the drier vent.) There are many of them (about 300 for a 2700 sq ft 2 story house, 95 years old) and they are dry rotted. They are solid rubber-ish material but some have poked through. Should I use louvered ones instead? I can't find any at home improvement stores or an internet vendor but I hear people talk about them. The diameter is 1" on white siding. I don't know if it was for insect control or insulation. I want to replace them so that I can clean the siding. Thanks for clearing up my confusion!
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