WBT YellowDuct horizontal crosses can be used to provide a cross intersection in a straight duct. Reduction crosses join horizontal duct of different sizes.
WBT P/N: TC1279-300AHorizontal cross, 300mm x 100mm (with cover)
WBT P/N: TC1279-331AHorizontal reduction cross, 300mm x 100mm to 220mm x 100mm (with cover)
WBT P/N: TC1279-300Horizontal cross, 300mm x 100mm