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

SKU

KBX1533INS

£198.31 £165.26

Product Information

Keystone BOX/K-150 Solid Wall Box Lintel, 3300mm (10ft 10in) length for 150mm wide walls
Incorporates internal insulation for improved thermal efficiency on site
Designed to support standard duty loads in solid masonry walls
Perforated design provides excellent plaster key for finishing
Lintel requires minimum 150mm bearing each side, bedded on mortar; propping recommended during construction

Details

The Keystone BOX/K-150 3300mm INS lintel is specifically engineered for builders and contractors working with 150mm solid walls. This insulated box lintel delivers dependable load support for internal openings while offering enhanced thermal performance thanks to its built-in insulation layer. Please note that lintels must be installed with appropriate bearing and bedding to ensure structural integrity.

Application

This lintel is widely used to span internal openings such as doorways and windows within solid masonry walls of 150mm thickness. Its robust box design supports the full load of wet masonry immediately after installation, making it suitable for projects requiring efficient and reliable structural components. The integrated insulation helps reduce thermal bridging, supporting compliance with building regulations and improving energy efficiency on site.

Dimension

Length: 3300mm (10ft 10in)
Height: 215mm (8.5in)
Width: 145mm (5.7in)
Suitable for wall widths from 100mm to 215mm

Material

Steel box section with integrated insulation layer
Perforated surface for plaster key

Type

Box lintel for solid masonry walls
Standard duty load-bearing lintel with insulation

All lintels require a minimum end bearing of 150mm on each side, bedded on mortar. Propping during construction is recommended to maintain speed and safety. For further technical advice or support, please contact our sales team.

More Information

More Information
Type	Box Lintels
Loading	Standard Duty
Length	3300mm
Weight	56.080000
Manufacturer	Keystone
Sap Id	KBX1533INS

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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