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Keystone BOX/K-150 Solid Wall Box Lintel 3300mm

SKU

KBX1533

£196.75 £163.96

Product Information

Keystone BOX/K-150 solid wall lintel, length 3300mm (10ft 10in), ideal for 150mm wide walls.
Designed for standard load-bearing applications, supporting internal masonry openings.
Perforated design provides a plaster key for enhanced finish and integration.
Requires minimum 150mm end bearing each side, bedded on mortar; optional insulation available.
Lintel must be propped during construction to ensure stability and speed of build.

Details

The Keystone BOX/K-150 is a robust steel box lintel tailored for internal openings in solid masonry walls 150mm thick. Trusted by builders and site managers, it offers dependable load support for standard-duty applications, helping maintain structural integrity on serious projects. Please note, lintels require a minimum 150mm bearing each side and must be bedded on mortar for correct installation.

Application

This lintel is commonly used to span doorways and window openings within solid walls ranging from 100mm to 215mm thick. Its perforated box design not only carries the full wet masonry load immediately after installation but also provides a mechanical key for plaster, ensuring a secure and neat finish. It is suitable for residential or commercial builds where reliable load distribution is critical. Builders should prop lintels during construction to maintain alignment and structural safety.

Dimension

Length: 3300mm (10ft 10in)
Height: 215mm (8½in)
Width: 145mm (5¾in)
Minimum end bearing: 150mm (6in) each side

Material

Manufactured from high-grade steel suitable for structural support in masonry walls

Type

Box lintel for solid wall applications
Standard duty load classification

All Keystone box lintels are manufactured in 150mm increments to suit specific wall widths. For further technical advice or assistance with your order, please contact our sales team.

More Information

More Information
Type	Box Lintels
Loading	Standard Duty
Length	3300mm
Weight	56.080000
Manufacturer	Keystone
Sap Id	KBX1533

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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