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Keystone BOX/K-100 Solid Wall Box Lintel 2100mm INS

SKU

KBX121INS

£75.58 £62.98

Product Information

Keystone BOX/K-100 insulated box lintel, 2100mm (6ft 11in) length
Designed for solid walls 100-215mm wide, ideal for internal openings
Standard duty load capacity for reliable structural support
Built-in insulation enhances thermal performance on site
Minimum 150mm end bearing required; lintels must be bedded on mortar

Details

The Keystone BOX/K-100 Solid Wall Box Lintel 2100mm INS is engineered specifically for builders and contractors working with 100mm wide solid walls. Featuring integrated insulation, this lintel offers enhanced thermal performance while delivering dependable support for internal openings on serious projects. Please note, lintels must be installed with a minimum 150mm bearing on both ends and bedded in mortar for optimal performance.

Application

This box lintel is ideal for supporting the full load of wet masonry above internal openings such as doorways and windows in solid walls ranging from 100mm to 215mm thickness. Its insulated design helps improve energy efficiency within the building envelope, making it a smart choice for projects where thermal performance matters alongside structural reliability. Propping lintels during installation is recommended to speed up construction and ensure safety.

Dimension

Length: 2100mm (6ft 11in)
Height: 150mm
Width: 95mm
Suitable for wall thickness: 100-215mm

Material

Steel with integrated thermal insulation
Mortar bedding required for installation

Type

Solid wall box lintel
Standard duty structural lintel

For technical advice or specific project requirements, please contact our sales team. All information is provided as a guideline to support your purchasing decisions.

More Information

More Information
Type	Box Lintels
Loading	Standard Duty
Length	2100mm
Weight	17.280000
Manufacturer	Keystone
Sap Id	KBX121INS

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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