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Keystone B/K-50 Single Leaf Cavity Wall Lintel 3750mm

SKU

KB5375

£205.24 £171.03

Product Information

Keystone B/K-50 single leaf cavity wall lintel, 3750mm (12ft 4in) length for substantial opening support
Designed for use with inner leaf concrete lintels to ensure structural integrity
Requires tight-fitting timber batten to prevent twisting during installation
Available for various cavity widths, here specified as B/K-50 for 50mm cavities
Standard duty lintel with 225mm height and 3.2mm thickness, suitable for typical trade applications

Details

The Keystone B/K-50 single leaf cavity wall lintel is engineered to provide dependable structural support for cavity wall openings up to 3750mm in length. This lintel is a practical choice for builders and site managers working on standard load-bearing masonry where reliability and conformity to cavity dimensions are essential. Please note, this lintel is designed for use in conjunction with an inner leaf concrete lintel and requires a tight-fitting timber batten to prevent twisting during installation.

Application

Ideal for cavity wall construction, the B/K-50 lintel supports openings such as window and door frames where a single leaf lintel is specified. It is commonly used alongside inner leaf concrete lintels to maintain wall stability and ensure load transfer across openings. The lintel’s design accommodates a 50mm cavity, making it suitable for walls built with this standard cavity width. Installation requires a timber batten fitted tightly to the lintel to prevent any lateral movement or twisting, ensuring a secure and durable fix.

Dimension

Length: 3750mm (12ft 4in)
Height: 225mm
Thickness: 3.2mm

Material

High-quality steel suitable for structural lintel applications

Type

Single leaf cavity wall lintel

Accessories such as timber battens are sold separately and must be fitted as part of the installation process to maintain lintel performance.

More Information

More Information
Type	Single Leaf Lintels
Loading	Standard Duty
Cavity Size	50-65mm
Length	3750mm
Weight	36.740000
Manufacturer	Keystone
Sap Id	KB5375

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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