1 mtr Channel 125mm 510
Round to Rectangular 125mm 570
Round Bend 45° 125mm 591
Round Bend 90° 125mm 590
Air Extractor Supply Valve 125mm 136/24
Connector 125mm 5900
Louvred Grill Round 125mm 5904
Round Wall Outlet 125mm 5900
Louvred Horizontal Air Brick with Damper 125mm 501B