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Keystone BOX/K-100 Solid Wall Box Lintel 3750mm

SKU

KBX1375

£229.92 £191.60

Product Information

Keystone BOX/K-100 solid wall box lintel, length 3750mm (12ft 3in), ideal for internal openings.
Designed for solid walls 100-215mm thick, supporting standard structural loads.
Constructed to carry full wet masonry load immediately after installation.
Requires minimum 150mm end bearing each side, bedded on mortar for secure fit.
Lintels should be propped during installation to ensure safe and efficient construction.

Details

The Keystone BOX/K-100 Solid Wall Box Lintel at 3750mm length is engineered for use in 100mm wide solid walls, providing dependable support for internal openings. Trusted by builders and site managers, this standard load lintel ensures structural integrity and fast progress on site. Please note lintels require proper bedding and propping during installation for optimal performance.

Application

Specifically designed for solid masonry walls between 100mm and 215mm thick, the BOX/K-100 lintel carries the full load of wet masonry immediately upon installation. It is ideal for supporting doorways, window openings, and other internal structural breaks where reliability and load-bearing capacity are essential. Suitable for standard duty projects, this lintel helps maintain site safety and build quality.

Dimension

Length: 3750mm (12ft 3in)
Height: 215mm
Width: 95mm

Material

Reinforced concrete (typical for box lintels)

Type

Solid wall box lintel
Standard duty structural lintel

Important: Keystone BOX/K-100 lintels require a minimum end bearing of 150mm on each side, securely bedded on mortar. Propping is recommended during installation to ensure safety and construction speed. Contact our sales team for further technical advice or sizing queries.

More Information

More Information
Type	Box Lintels
Loading	Standard Duty
Length	3750mm
Weight	49.010000
Manufacturer	Keystone
Sap Id	KBX1375

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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