Manufacture & Exporters of Wide Range of Return Air Riser Made out of 18/20 Swg. CRCA / Galvanize Powder Coated / Stainless Steel 304 Construction for Suitable of  Wall Mounted Top / Side Connection With Arrangement of Manually Operated Volume Control Damper , Aluminum Powder Coated / SS 304 Capsule Perforated Grill & 20u HDPE Washable Cassate Type  Pre Filter.