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Keystone B/K-50 Single Leaf Cavity Wall Lintel 3900mm

SKU

KB539

£213.07 £177.56

Product Information

Keystone B/K-50 cavity wall lintel, 3900mm (12ft 9in) length for robust structural support.
Designed for single leaf walls with a 50mm cavity width, suitable for standard duty loads.
Requires use with an inner leaf concrete lintel and a tight-fitting timber batten to prevent twisting.
Constructed from 3.2mm thick steel with a 225mm height for dependable performance.
Ensure correct installation as lintels are supplied individually; accessories and bricks sold separately.

Details

The Keystone B/K-50 Single Leaf Cavity Wall Lintel, measuring 3900mm in length, is engineered for builders and site managers requiring dependable support for cavity wall constructions. Its design caters to single leaf walls with a 50mm cavity, offering a standard duty load capacity for routine structural needs. Please note that this lintel must be used alongside an inner leaf concrete lintel and a tightly fitted timber batten to maintain stability and prevent twisting during installation.

Application

This lintel is ideal for supporting openings in single leaf cavity walls, commonly used in residential and commercial building projects. It provides a reliable bearing over doors, windows, and other wall apertures where a 50mm cavity is specified. The product is particularly suited to contractors and developers seeking consistent, trustworthy materials that meet structural standards.

Dimension

Length: 3900mm (12ft 9in)
Height: 225mm
Thickness: 3.2mm

Material

High-quality steel suitable for structural lintel applications

Type

Single leaf cavity wall lintel

Important: This lintel is supplied individually and must be installed with the appropriate inner leaf concrete lintel and timber batten to ensure correct function. Accessories shown in illustrations are not included.

More Information

More Information
Type	Single Leaf Lintels
Loading	Standard Duty
Cavity Size	50-65mm
Length	3900mm
Weight	38.210000
Manufacturer	Keystone
Sap Id	KB539

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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