• 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 Composite Grate (CPCG252)
• Adjustability: 250mm Height

Warranty: Lifetime