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Keystone B/K-90 Single Leaf Cavity Wall Lintel 4200mm

SKU

KB942

£254.24 £211.87

Product Information

Keystone B/K-90 cavity wall lintel, 4200mm (13ft 9in) length for robust structural support.
Specifically designed as a single leaf lintel for use with inner leaf concrete walls.
Requires a tight fitting timber batten to prevent twisting during installation.
Suitable for cavity widths around 90mm, with other B/K variants available for different cavity sizes.
Standard duty load lintel with dimensions 225mm height and 3.2mm thickness for reliable on-site performance.

Details

The Keystone B/K-90 Single Leaf Cavity Wall Lintel is engineered for trade professionals needing dependable structural support over openings in cavity walls. This 4200mm lintel is ideal for use with an inner leaf concrete wall system, providing strength and stability where it matters most. Please note, this lintel must be used alongside a tight fitting timber batten to prevent twisting during installation.

Application

Designed primarily for builders, contractors, and site managers, the B/K-90 lintel supports brickwork or blockwork over window and door openings in cavity wall construction. It is especially suited for single leaf inner concrete walls where a durable lintel is required to carry the load above openings without compromising structural integrity.

Dimension

Length: 4200mm (13ft 9in)
Height: 225mm (8.9in)
Thickness: 3.2mm (0.13in)
Designed to fit a 90mm cavity width

Material

High-quality steel lintel manufactured to meet standard duty load requirements
Compatible with timber battens for secure installation

Type

Single leaf cavity wall lintel
Structural support component for masonry openings

Ensure the correct use of a tight fitting timber batten with this lintel to maintain its shape and performance on site. This product is sold as the lintel only; any supporting materials such as timber battens or bricks must be sourced separately.

More Information

More Information
Type	Single Leaf Lintels
Loading	Standard Duty
Cavity Size	90-105mm
Length	4200mm
Weight	43.260000
Manufacturer	Keystone
Sap Id	KB942

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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