Used in air conditioning and ventilation systems for connection between rectangular ducts and circular ducts.
The rectangular end is flanged, while the circular end is equipped with seal or is flanged, too, for connection to a fan unit.
RTR - T-piece - reducer
RFAR - Connection, vibration proof
RDSR - S-piece - reducer
RPA135 - Roof intake at 135°
RRL - Branch
RSD - S-piece
RPRR - Transition piece, rectangular duct to flat surface
RTE - T-piece
RPAA - Roof intake
RR - Reducer
RCA - Cap
RPRC - Transition piece, rectangular duct to circular surface
RT - Straight duct
RPA45 - Wall intake at 45°
RCR - Reducing bend
RRP - Y branch
RRB - Double branch
RC - Bend
CAP - Rainproof cap
CPV - Plenum
ATZ - Rectangular Silencer
RTB - T-piece at 45°