⌀250mm Adjustable Round Riser

Adjustable riser for setting finished grate height on site. Threaded adjustment ring allows precise height adjustment to suit installation conditions. Provides 195mm of vertical adjustment, increasing the installed height of the PP250-600 pit by 110mm to 305mm. Ideal where finished surface levels may vary, including paving, concrete and landscaped areas. Suitable for stormwater and wastewater pit installations. Compatible with the CPCG252 Composite Grate. Compatible with the AL250RD Aluminium Grate when used with the PPRDAL250 insert packer, which provides support for the aluminium grate.