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Keystone B/K-90 Single Leaf Cavity Wall Lintel 3900mm

SKU

KB939

£236.89 £197.41

Product Information

Keystone B/K-90 single leaf cavity wall lintel, 3900mm (12ft 9in) length for substantial openings.
Designed for use with inner leaf concrete lintels to provide stable structural support.
Requires tight fitting timber batten to prevent twisting during installation.
Suitable for cavity widths around 90mm, part of a range for different cavity sizes (B/K-50, B/K-70, B/K-90).
Standard duty load rating with 225mm height and 3.2mm thickness for dependable strength on site.

Details

The Keystone B/K-90 single leaf cavity wall lintel at 3900mm is engineered for builders and contractors needing a robust structural solution for cavity walls. This lintel is a dependable choice when paired with an inner leaf concrete lintel, offering consistent performance on serious building projects. Please note, a tight fitting timber batten must be used alongside to prevent twisting during installation.

Application

This lintel is typically used in cavity wall construction where a single leaf support is required, especially in residential and commercial masonry openings. It’s designed to work in conjunction with inner leaf concrete lintels to ensure load distribution and structural integrity. Ideal for site managers and tradespeople handling cavity widths around 90mm, it provides a reliable framework for windows, doors, and other openings.

Dimension

Length: 3900mm (12ft 9in)
Height: 225mm (8.9in)
Thickness: 3.2mm (0.13in)
Cavity width compatibility: approximately 90mm

Material

High-grade steel lintel designed for structural durability
Coated to resist corrosion and withstand site conditions

Type

Single leaf cavity wall lintel
Standard duty structural support

Remember, the Keystone B/K-90 lintel must be installed with a tight fitting timber batten to prevent twisting, ensuring long-term stability. This product is supplied as the lintel only; any bricks or inner leaf concrete lintels are sold separately.

More Information

More Information
Type	Single Leaf Lintels
Loading	Standard Duty
Cavity Size	90-105mm
Length	3900mm
Weight	40.170000
Manufacturer	Keystone
Sap Id	KB939

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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