How can I stop taking air out of my house snapping in the wind. The exhaust fan cover.?

Can I take it just a vent cover for an air extractor fan in a bathroom or kitchen, if so the best thing you can do is replace it with a barbecue can cover fixed costs a few pounds of B & Q or Wickes etc. These do not have any moving parts on them to make noise. Just fix it to where the original was, the screw holes will probably match without having to drill holes in the wall.

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Nordic Ware 65004 11-Inch Microwave Plate Cover $8.99 Prevents spatters in the microwave and keeps food warm for serving. See-thru hard plastic so you can view food as it cooks. Stackable, and fits dinner plates up to 11-in. BPA-free....

Pyrex 1072164 Storage 18-Piece Round Set $30.95 Pyrex 18 piece storage set includes three 2 cup round storage containers with lids, two 7 cup round storage containers with lids, two 4 cup round storage containers with lids and two 1 cup round storage containers and lids...