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Keystone B/K-70 Single Leaf Cavity Wall Lintel 3900mm

SKU

KB739

£231.53 £192.94

Product Information

Keystone B/K-70 lintel with a length of 3900mm (12ft 9in) and height of 225mm (8.9in), ideal for cavity wall construction.
Designed as a single leaf lintel for standard duty load-bearing applications.
Must be used alongside a tight-fitting timber batten to prevent twisting during installation.
Compatible with inner leaf concrete lintels for robust structural support.
The B/K range offers various cavity widths; specify B/K-70 for a 70mm cavity. Accessories and bricks sold separately.

Details

The Keystone B/K-70 Single Leaf Cavity Wall Lintel at 3900mm is purpose-built for builders and contractors requiring dependable lintel support within cavity wall systems. Engineered for use with inner leaf concrete lintels, this product ensures structural integrity on serious projects. Please note, this lintel requires a tight-fitting timber batten to be installed to prevent twisting and maintain stability.

Application

This lintel is suited to cavity wall constructions where a single leaf lintel is needed to bear standard duty loads. It is commonly used in conjunction with inner leaf concrete lintels to provide a continuous support system above openings such as windows and doors. The B/K-70 model caters to a 70mm cavity width, making it ideal for modern cavity wall builds where precise fit and reliability are crucial.

Dimension

Length: 3900mm (12ft 9in)
Height: 225mm (8.9in)
Thickness: 3.2mm

Material

Steel lintel with corrosion-resistant coating
Tight-fitting timber batten required (not included)

Type

Single leaf cavity wall lintel
Standard duty load-bearing lintel

Accessories shown in illustrations are not included. Bricks and other masonry components must be sourced separately. The Keystone B/K-70 lintel is part of a range designed to accommodate different cavity widths, so ensure you specify the correct model for your wall specification.

More Information

More Information
Type	Single Leaf Lintels
Loading	Standard Duty
Cavity Size	70-85mm
Length	3900mm
Weight	39.190000
Manufacturer	Keystone
Sap Id	KB739

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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