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Keystone X/K-90 Extreme Duty Cavity Wall Lintel 3750mm

SKU

KX9375

£1,064.92 £887.43

Product Information

Keystone X/K-90 lintel, length 3750mm (12ft 4in) for substantial cavity wall support.
Engineered for extreme duty, suitable for cavity widths between 90-105mm (3.5-4.1in).
Galvanised steel flange ensures durability and corrosion resistance for outer leaf applications.
Recommended lateral restraint and propping to maintain load performance and speed up site work.
All technical details provided as guidance; please contact our sales team for project-specific advice.

Details

The Keystone X/K-90 Extreme Duty Cavity Wall Lintel at 3750mm is a robust solution designed for builders and site managers needing reliable support for large and heavily loaded cavity wall openings. Perfect for serious construction projects requiring structural integrity across 90-105mm cavity widths. Please note, for optimal performance, the lintel must be laterally restrained and propped during installation.

Application

This lintel is specifically crafted to carry heavy structural loads over cavity walls with widths from 90mm to 105mm (3.5-4.1in). It is ideal for commercial and residential developments where large openings such as doors or windows demand extreme duty support. The galvanised steel flange is designed to resist corrosion on the outer leaf, making it suitable for external wall applications where durability is critical. Proper lateral restraint and temporary propping are recommended to ensure the lintel achieves its full load-bearing capacity and helps maintain construction timelines.

Dimension

Length: 3750mm (12ft 4in)
Height: 213mm (8.4in)
Width: 283mm (11.1in)

Material

Galvanised steel flange for outer leaf protection
Structural steel for extreme load capacity

Type

Extreme duty cavity wall lintel

For any specific loading requirements or installation guidance, please contact our sales office. This product is supplied as described; images are for illustration purposes only.

More Information

More Information
Type	Cavity Wall Lintels
Loading	Extreme Duty
Cavity Size	90-105mm
Length	3750mm
Weight	167.140000
Manufacturer	Keystone
Sap Id	KX9375

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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