1 3/8" Expanded Metal Screen
grabcad
Used it as the base model for a screen cutout on the back of a cooling fan I'm working on at an Internship. The piece I needed is a 26" circle so this grid has an appropriate number of spaces in a rectangular pattern to cut out the shape. The arrays can be modified in size for however much anyone needs. It does run slower as the grid gets bigger. The full size of one of these small grids is 1.6731" long and .7625" wide for precise array spacing and size needed. I didn't specify a material because that can always vary.
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