300mm dia. Flexible connections for all inlets allows 10° movement in any direction on 3 inlets. Chamber risers, cover and frame sold separately. Helps where connecting pipes are not perfectly aligned with MAC inlets. The variety of inlet combinations available for the MAC and the choices of Chamber Risers, 100mm (Quote 18835) and 200mm (Quote 11153) provides installers with a significant advantage inplanning and installing a drainage system. Specifications: Maximum depth of MAC 600mm (base + 1 x 100mm x 1 x 200mm risers) including lid.