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Keystone X/K-90 Extreme Duty Cavity Wall Lintel 3900mm

SKU

KX939

£1,107.50 £922.92

Product Information

Keystone X/K-90 cavity wall lintel, length 3900mm (12ft 9in), designed for heavy structural loads.
Suitable for cavity widths between 90mm and 105mm, ideal for robust masonry openings.
Galvanised steel flange on the outer leaf for enhanced corrosion resistance.
Recommended lateral restraint and propping to achieve full load capacity and speed up installation.
All technical details provided as a guide – please contact our sales team for project-specific advice.

Details

The Keystone X/K-90 Extreme Duty Cavity Wall Lintel at 3900mm length is engineered for builders, contractors, and site managers who require dependable support over large openings in cavity walls with widths of 90-105mm. Its robust design ensures it can handle extreme structural loads typical of demanding construction projects. Please note, correct lateral restraint and propping are essential to achieve the specified loading performance.

Application

This lintel is designed for use in cavity wall construction where heavy loads must be supported, such as above large window or door openings in residential and commercial buildings. Its galvanised steel flange provides long-lasting protection against corrosion on the outer leaf, making it suitable for exposed external walls. The lintel is ideal for structural engineers and builders aiming for reliable, code-compliant support on serious builds.

Dimension

Length: 3900mm (12ft 9in)
Height: 213mm (8.4in)
Width: 283mm (11.1in)
Cavity range: 90-105mm
Weight: 173.82kg

Material

Galvanised steel flange on outer leaf for corrosion resistance
Steel lintel body designed for extreme load bearing

Type

Extreme duty cavity wall lintel
Structural building support

For optimum performance, ensure the lintel is laterally restrained and propped during installation as recommended. If you need further technical guidance or project-specific support, please contact our sales office. Images are for illustration only.

More Information

More Information
Type	Cavity Wall Lintels
Loading	Extreme Duty
Cavity Size	90-105mm
Length	3900mm
Weight	173.820000
Manufacturer	Keystone
Sap Id	KX939

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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