DVAC Spiral Circular Ducts are constructed either with LFQ Galvanized Steel complying with ASTM A653, having G90 Coating Designation, or with Stainless Steel complying with ASTM A240/A480, or with Aluminum Steel complying with ASTMB209, Alloy 3003,Temper H14

DVAC Spiral Ducts can be Single Wall Or Double Wall:
     – Single Wall from Ø 100mm Up to 2,500mm
     – Double Wall from Ø 100mm Up to 1,450mm

Construction of DVAC Spiral circular Ducts complies with SMACNA Standards