The Clark Drain driveway cover reducer ring is designed to reduce the opening of a 450mm diameter chamber down to 350mm. This allows you to meet Part H of the building regulations when the depth passes 1.2m. This product fits the following products - CD452, CD456 and CD450SR. The product features an integral snap lock to ensure secure fitting.
Manufacturer: Clark Drain
Product Code: CD499
Diameter: 450mm Diameter - reduces to 350mm.
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