Inspection Chamber Reducer 450mm x 350mm

Product Code: B6350
Brand: Brett Martin
Est. Delivery: 1-2 Working Days
View Transport Policy

All delivery charges are included in the final shopping basket and are dependent on the products Scottish Highlands & the Islands where additional shipping charges will apply.

Please note that not all products will incur an additional delivery charge to the Scottish Highlands & the Islands – this is based on the costs from the manufacturer, distributor or courier providing shipping on our behalf. If your delivery address is in the Scottish Highlandsand Islands, a member of our helpline team will contact you prior to processing your order should an additional delivery charge apply.

While we make every effort to ensure orders are delivered by the date required, we cannot guarantee availability from the manufacturer or the manufacturer's delivery schedules.

Any variation to web delivery date given will be advised to you by email or telephone. If we are unable to make delivery because access is not possible, we reserve the right to make a failed delivery charge.

£19.58 Incl. VAT
£16.32 Ex. VAT
Bulk order for discounts
  • 1+
    £19.58 Incl. VAT
    £16.32 Ex. VAT

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

Product Documents

Frequently Bought Together

Brett Martin Guides & Articles


Questions & Answers

There are currently no questions for this product.

Have a question about this product?

Product Enquiry Form
Inspection Chamber Reducer 450mm x 350mm

*Required Field

Price Match Enquiry

Inspection Chamber Reducer 450mm x 350mm

We will beat any current genuine advertised price on this product. Please fill in the form below with a link to the product on the site you have found it cheaper on, or provide photographic evidence and one of our sales team will contact you regarding your order.

*Required Field

Please Note:

  • Product must be identical
  • Price match must include delivery charges made by the competitor
  • A price match claim made after an order has been made for a product will not apply
  • Price match applies to UK deliveries only
  • Price match excludes items sold on auction sites or by private sellers

Would you like to empty your basket?

Yes No


It seems you are running an older version of Internet Explorer. Our site does not support these old browsers as they do not house the technology that allows our site to be safe and secure.

If you wish to access our site please either upgrade your browser or download an alternative.