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Keystone BOX/K-150 Solid Wall Box Lintel 4500mm INS

SKU

KBX1545INS

£340.45 £283.71

Product Information

Keystone BOX/K-150 Solid Wall Box Lintel, 4500mm (14ft 9in) length for solid walls 100-215mm thick.
Includes insulation to enhance thermal efficiency, ideal for energy-conscious builds.
Designed to carry full wet masonry load immediately after installation, ensuring reliable structural support.
Perforated length acts as a plaster key for improved finish and adhesion.
Must have minimum 150mm end bearing on each side, bedded on mortar; lintels should be propped during installation.

Details

The Keystone BOX/K-150 Solid Wall Box Lintel is a specialist structural support designed for internal openings in 150mm wide solid walls. Featuring integrated insulation, this lintel improves thermal performance while providing dependable load-bearing capacity. It’s an excellent choice for builders and site managers aiming for both strength and energy efficiency on serious projects. Please note, lintels must be bedded and propped correctly for optimal use.

Application

Specifically engineered for supporting internal openings in solid masonry walls between 100mm and 215mm thick, the BOX/K-150 lintel carries the full wet masonry load immediately after installation. Its insulated design helps meet modern thermal performance standards, making it suitable for energy-conscious developments. Typical uses include door and window openings in solid brick or block walls where reliable structural integrity and insulation are required.

Dimension

Length: 4500mm (approximately 14ft 9in)
Width: 145mm (5.7in)
Height: 215mm (8.5in)
Suitable wall thickness: 100-215mm

Material

Steel with integrated insulation panel
Perforated for plaster keying

Type

Box lintel – insulated, standard duty for solid masonry walls

Important: Keystone Box Lintels must have a minimum end bearing of 150mm on each side, bedded on mortar, and should be propped during installation to facilitate construction speed and ensure safety.

More Information

More Information
Type	Box Lintels
Loading	Standard Duty
Length	4500mm
Weight	76.480000
Manufacturer	Keystone
Sap Id	KBX1545INS

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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