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Keystone BOX/K-100 Solid Wall Box Lintel 3150mm INS

SKU

KBX1315INS

£178.02 £148.35

Product Information

Keystone BOX/K-100 Solid Wall Box Lintel, 3150mm (10ft 4in) long, designed for 100-215mm solid walls.
Features built-in insulation to enhance thermal efficiency on site.
Standard duty lintel suitable for supporting internal openings carrying wet masonry loads.
Requires minimum 150mm end bearing each side, bedded on mortar for safe installation.
Lintel must be propped during construction to ensure stability and speed.

Details

The Keystone BOX/K-100 3150mm INS is a specialist insulated box lintel engineered for internal openings in solid walls between 100mm and 215mm thick. Its integral insulation boosts thermal performance, making it a reliable choice for contractors demanding both structural support and energy efficiency. Please note, lintels must be installed with proper end bearing and temporary propping to maintain structural integrity during construction.

Application

This box lintel is ideal for builders and site managers working on standard load-bearing internal openings where solid masonry walls require dependable support. It carries the full load of wet masonry immediately upon installation, speeding up build time and ensuring safety. The insulated design also helps meet thermal performance requirements in modern builds.

Dimension

Length: 3150mm (10ft 4in)
Height: 215mm (8½in)
Width: 95mm (3¾in)
Suitable for wall thicknesses from 100mm to 215mm

Material

Steel lintel with integrated insulation layer
Designed to withstand wet masonry loads

Type

Box lintel for solid walls
Standard duty structural support component

All lintels require a minimum 150mm bearing at each end, bedded on mortar. Props must be used during installation to ensure safety and maintain construction pace. For further technical advice, please contact our sales team.

More Information

More Information
Type	Box Lintels
Loading	Standard Duty
Length	3150mm
Weight	41.170000
Manufacturer	Keystone
Sap Id	KBX1315INS

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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