Thank you for your question. The Mesh size is 1/8th inch which is much larger than screen for a window.
Thank you for question! This product is 0.17 gauge.
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That is exactly how I installed this product.
Thank you for your question! The Kwik Mesh is 70.56% open.
Two ways I can suggest. 1. Use rivets. 2. Self threading screws with washers. ( you can also use thin aluminum straps and place mesh between straps and door, secure with nuts and bolts).
It may reduce the airflow because of the smaller holes (more metal per square inch), but it's tough enough to stop insects and birds. I haven't seen any rust on mine since installing it a couple of years ago, but if you live in a highly rust-inducing climate, it might eventually rust.