perforated metal filter Quality Certification:ISO9000 Width: 0.5m-3m Length:1m-5m Hole:As your request Use for : HVAC round ducts, oval ducts, chimney flue, Oil filter etc. 1 Diameter of round tubes: 150mm ~ 500mm. 2 Tube length: 1m, 1.5m, 2m, 3m, 6m . 3 Thickness of strip: 0.35 ~ 3mm 4 Width of strip: 65mm 5 Strip speed: 1~40m/min6 Suitable strip material: Aluminum, stainless steel, galvanized ...