450mm Manhole Riser CD U455

Manhole risers are used to raise the height of the manhole from the base to the lid. The risers are compatible with the manhole bases and lids which when combined form the complete manhole. Manhole risers interlock and can be added / stacked to the height required.

• 450mm Diameter riser 500mm (W) x 340mm (D)
• Load rating classification is up to b125 (12.5 tonnes) when used with appropriate manhole cover
• Compliant to relevant clauses of bs en13598-1:2010 and sewers for adoption, 7th edition
• Non-rusting design made from recycled material
• Supplied with joint seal
• Total depth can be up to 1.2m using further cd 455 risers with matching Clarkdrain U453 chamber base
• Rise height is 300mm

Shipping Label: building supplies