Skip to the beginning of the images gallery

Brett Martin 450mmx350mm Reducer (Invert Over 1.2m) (B6350)

SKU

bm_B6350

£23.65 £19.71

Product Information

Brett Martin drainage reducer, 450mm x 350mm (17.7" x 13.8") for invert heights over 1.2m.
Ideal for underground drainage systems requiring smooth transitions between pipe sizes.
Engineered for durability and reliable performance in civil engineering groundworks.
Designed to speed up installation and reduce site labour time.
Image for illustration only; sold as single units.

Details

The Brett Martin 450mm x 350mm drainage reducer is engineered for civil engineering contractors and groundworkers requiring dependable pipe size transitions in underground drainage systems. It is specifically designed for applications where the invert height exceeds 1.2 metres, delivering reliable flow management and structural stability on demanding sites.

Application

This reducer is ideal for drainage runs that require a seamless downscale from 450mm to 350mm pipe diameters without sacrificing system integrity. Commonly used in commercial and industrial groundworks, it supports durable drainage networks in infrastructure and public realm projects. Its design allows for straightforward installation, helping site teams maintain project schedules and meet rigorous performance standards.

Dimension

450mm x 350mm (17.7" x 13.8") suitable for invert heights over 1.2m (approx. 3.9ft).

Material

High-grade polymer designed for underground drainage applications.

Type

Drainage reducer fitting.

Note: Images are for illustration purposes only.

More Information

More Information
Manufacturer	Brett Martin
MPN	B6350
Category	Underground
Colour	Black
Type	450mm Inspection Chamber (5 Inlets)
Width	450mm
Availability	Generally available in 3 to 5 working days.
Sap Id	bm_B6350

Customer Reviews

No reviews yet on this product

Delivery Information

Delivery availability

We deliver to most mainland UK addresses. Some postcode areas are excluded – please see the full list below.

Delivery charges

Delivery costs vary depending on your location, the products ordered, and the delivery method selected. All delivery charges are calculated clearly at checkout.

Fuel Surcharge

Information on our added Fuel Surcharge can be found at https://condell-ltd.com/fuel-surcharge-notification

Delivery dates

You can request a preferred delivery date at checkout. While we aim to meet this wherever possible, availability may depend on stock levels and third-party delivery schedules. If your chosen date is unavailable, a member of our team will contact you to arrange an alternative.

Delivery method

All deliveries are made kerbside as standard. For health and safety reasons, drivers are unable to carry materials beyond the kerb. If you have specific access requirements, please contact us before placing your order.

Delivery exclusions

We currently do not deliver to the following postcode areas:

AB16, AB21–22, AB30–AB38, AB41–AB56, BT1–BT94, CA2, CA15, CA28, DD1, DD8, DD9, DG1, DG2, DG10–DG14, DG16, FK18–FK20, GY1–GY9, HS1–HS9, IM1–IM9, IV1–IV5, IV7, IV12–IV13, IV21–IV28, IV30–IV36, IV40–IV56, JE1–JE4, KA1, KA4–KA6, KA14–KA15, KA18–KA21, KA27–KA30, KW1–KW3, KW6–KW17, KY6–KY10, KY13–KY16, LL49, LL58–LL62, LL64–LL78, PA17–PA78, PH11, PH19–PH26, PH30–PH33, PH35–PH38, PH40–PH44, PH49–PH50, PO30–PO41, SA68, SA71, ZE1–ZE3

Important delivery terms

Shortages must be reported within 48 hours and noted on delivery paperwork
All deliveries must be signed for; redelivery charges may apply
Deferred deliveries may incur storage charges
Collected orders are not subject to delivery charges
Returns are subject to a 25% restocking fee (delivery charges excluded)
Made-to-measure items are non-refundable
Reasonable access to the delivery point must be available; additional charges may apply