4CHRAX90- 90° External Angle., 4CHRAI90 - 90° Internal Angle., 4CHRAX135 - 135° External Angle., 4CHRAI135 - 135° Internal Angle, 4CHRO2R - Running Outlet (Ø63 mm)., 4CHRO3R - Running Outlet (Ø76 mm)., 4CHRSEI - Internal Stopend., 4CHRSEX - External Stopend., 4CHRUC - Union Connector., 4CHRBF - Fascia Bracket., 4CHRBRT - Top Fix Rafter Bracket., 4CHRBRS - Side Fix Rafter Bracket., 4CHRBRF - Rise and Fall Bracket.