Made from high grade aluminum extrusion of 6063 - T6 grade. Prefixed pitches of vanes are factory fitted. Frame options of two, Three, Four side flanges are available which are mitered, cleated and press locked. Provision for fitment of alignment strip for placements of segments in continuous manner.Suitable frames are provided for wall and/or ceiling corners as per requirement. Hit & Miss Damper for individual slot, if required.