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Keystone BOX/K-150 Solid Wall Box Lintel 1200mm INS

SKU

KBX1512INS

£46.82 £39.02

Product Information

Keystone BOX/K-150 Solid Wall Box Lintel, 1200mm (47¼") length for 150mm (6") wide solid walls.
Insulated 'INS' version offers enhanced thermal efficiency for energy-conscious builds.
Designed for standard load internal openings, supporting wet masonry immediately after installation.
Features perforations along the length to provide a secure key for plaster finishes.
Minimum 150mm (6") bearing on each side required; lintel must be bedded on mortar and propped during construction.

Details

The Keystone BOX/K-150 Solid Wall Box Lintel 1200mm INS is a specialist structural support designed for internal openings in 150mm solid walls. Ideal for builders and site managers seeking reliable lintels with improved thermal performance, this insulated version helps meet modern energy standards without compromising load-bearing capacity. Please note, lintels must be installed with correct bearing and propping for best results.

Application

This box lintel is primarily used to span internal openings where solid masonry walls require dependable support. It is suitable for standard duty loads, making it an excellent choice for residential and commercial projects where walls are 150mm thick. The integrated insulation improves thermal efficiency, supporting compliance with building regulations that demand better energy retention. The perforated design ensures strong adhesion for plaster or render finishes, streamlining site workflow.

Dimension

Length: 1200mm (47¼")
Height: 150mm (6")
Width: 145mm (5¾")
Suitable for wall thicknesses from 100mm up to 215mm

Material

Steel lintel with integrated insulation for thermal performance
Perforated steel to provide plaster key

Type

Solid Wall Box Lintel
Standard Duty Load Bearing Lintel

Lintels must have a minimum end bearing of 150mm (6") on each side, bedded on mortar and propped during construction to ensure structural integrity. For advice on installation or load specifications, please contact our sales team.

More Information

More Information
Type	Box Lintels
Loading	Standard Duty
Length	1200mm
Weight	9.650000
Manufacturer	Keystone
Sap Id	KBX1512INS

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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