Inspection Chamber Reducer 450mm x 350mm

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Est. Delivery: 7-10 Working Days
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£22.01 Incl. VAT
£18.34 Ex. VAT
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Product Description

Manufactured from hardwearing and durable polypropylene, Brett Martin’s heavy duty Lids and Frames provide a robust and secure solution for residential applications. The strong webbed design delivers a substantially stronger lid capable of withstanding a maximum loading of 50kN (when supported by a concrete plinth).

The Lids and Frames are fully compatible with Brett Martin SfA7 Adoptable and Non-Adoptable Inspection Chambers. Tested to EN124 A15 and in conformance with Building Regulations, the Lids and Frames have the seal of approval.


  • Heavy duty polypropylene round and square, lids and frames
  • Massive 50kN loading capability (when supported by a concrete plinth)
  • Tested to EN124 A15 and conforms to Building Regulations
  • Compatible with Brett Martin 450mm Inspection Chamber Assemblies
  • Suitable for residential applications
  • Provides restricted access to dia 350mm
  • Fits securely into square and round frames
  • Clips allow ring to snap into place
  • Screw holes provide more permanent fixing
  • Use when Chamber Invert exceeds 1.2m


Diameter: 450mm x 350mm

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Inspection Chamber Reducer 450mm x 350mm

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