• Uses a threaded ring to set the height
• Threaded design allows for precise height adjustment to suit varying site conditions
• Likely polypropylene or similar durable plastic, consistent with other Clarks risers (not explicitly stated)
• Used in stormwater and wastewater systems to elevate the grate to match finished surface levels
• Compatible with round-to-square adapters (e.g., PPRDSQ, PPAD), and grates (eg. cast iron grate (CI300G), and frames (CI300F)
• Adjustability: 300mm Height

Warranty: Lifetime