Stainless Steel perforated filter screen fits the Amiad 2" T Super and 3" T filters including those with the brushaway feature. The larger micron ratings provide filtering for larger debris only and is perfect for pre-filtering before the system filter in any irrigation set-up with dirty water, such as pulling from surface water. This is a stainless steel sheet with perforations stamped throughout, not a weavewire type screen.Amiad Perforated Screen Micron vs MeshMicron800150025003500Mesh201064