5 Way 450mm Underground Drainage Base For Inspection Chamber Set Circular Base For Manhole System Base Only from B&Q
B&Q
The Polydrain MB450 chamber base is a versatile and durable foundation for 450mm inspection chambers, designed specifically for use with 110mm underground drainage systems. Manufactured from tough polypropylene, the MB450 combines strength with lightweight handling, making installation quick and efficient on site.With a diameter of 450mm and a height of 236mm, the MB450 base provides ample capacity for shallow chamber construction. It features multiple 110mm inlet and outlet positions, supplied with blanking plugs to seal unused connections, giving installers flexibility to adapt layouts to project requirements.Fully compliant with BS EN 13598-1 and Building Regulations Part H1, the MB450 is suitable for inspection chambers up to 1.2m deep in non-adoptable applications. In Wales, it conforms to SfA7 Type 4 chamber detail, ensuring regional compliance.The MB450 is compatible with Polydrain risers and a choice of round or square access covers, allowing chambers to be tailored to site conditions and finished neatly at ground level. Its ribbed design ensures stability, while the supplied blanking plugs maintain system integrity.Trusted by contractors and merchants alike, the Polydrain MB450 chamber base delivers a reliable, regulation-compliant solution for modern drainage systems, balancing ease of installation with long-term performance.
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| Professional Building Supplies | 38,42 GBP | Go to shop |
