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Keystone BOX/K-100 Solid Wall Box Lintel 3300mm INS

SKU

KBX133INS

£178.68 £148.90

Product Information

Keystone BOX/K-100 insulated lintel, 3300mm (10ft 10in) length for solid walls.
Designed for standard duty load-bearing on internal wall openings 100-215mm thick.
Includes insulation to improve thermal efficiency on site.
Box lintel supports full wet masonry load immediately after installation.
Must have minimum 150mm end bearing each side, bedded on mortar; lintels should be propped during construction.

Details

The Keystone BOX/K-100 Solid Wall Box Lintel 3300mm INS is engineered for builders and contractors needing a dependable lintel solution for 100mm solid walls. Featuring built-in insulation, this lintel improves thermal performance while delivering the robust support required for internal openings on serious projects. Please note, lintels must be installed with correct bearing and support as detailed below.

Application

This box lintel is suitable for standard load-bearing applications in solid masonry walls between 100mm and 215mm thick. It is ideal for internal openings such as doorways or window reveals where reliable, immediate load support is essential. The insulated version (INS) offers enhanced thermal properties, helping meet building regulations and improve energy efficiency.

Dimension

Length: 3300mm (10ft 10in)
Height: 215mm
Width: 95mm

Material

Steel with integrated insulation layer

Type

Box lintel for solid wall applications

Box lintels require a minimum end bearing of 150mm on each side, to be bedded on mortar for correct load transfer. To ensure construction speed and safety, lintels should be propped during masonry works. For any technical queries or specific project requirements, please contact our sales team for expert guidance.

More Information

More Information
Type	Box Lintels
Loading	Standard Duty
Length	3300mm
Weight	43.130000
Manufacturer	Keystone
Sap Id	KBX133INS

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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