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Keystone BOX/K-200 Solid Wall Box Lintel 3900mm

SKU

KBX239

£307.98 £256.65

Product Information

Keystone BOX/K-200 solid wall box lintel, length 3900mm (12ft 9in) for 200mm wide walls.
Standard duty lintel engineered to support internal openings with wet masonry loads.
Features perforations along the length for enhanced plaster key adhesion.
Requires minimum 150mm end bearing on each side, bedded on mortar; optional insulation available.
Lintel must be propped during construction to speed up work and ensure safety.

Details

The Keystone BOX/K-200 Solid Wall Box Lintel, measuring 3900mm in length, is a trusted choice for builders and site managers working with 200mm wide solid walls. Designed for internal openings, this lintel offers dependable load support for wet masonry, making it ideal for serious building projects where reliability is essential. Please note, lintels must be installed with adequate bearing and props to ensure correct performance.

Application

This box lintel is primarily used to support lintelled openings such as doors and windows within solid walls between 100mm and 215mm thick. Its perforated design enhances plaster adhesion, ensuring a smooth finish once rendering is applied. Suitable for standard duty loads, it carries the full weight of wet masonry immediately after installation, making it a practical choice for efficient site progress. It is important to provide a minimum end bearing of 150mm on each side, and lintels should be propped during construction to maintain structural integrity and speed up build times.

Dimension

Length: 3900mm (12ft 9in)
Wall width compatibility: 100-215mm
Height: 215mm
Width: 200mm

Material

Steel (galvanised for durability and corrosion resistance)

Type

Box lintel for solid wall applications

All lintels are manufactured in 150mm increments to suit site requirements. For further technical advice or specific project needs, please contact our sales office. Proper installation is critical; ensure lintels are bedded on mortar with adequate end bearing and supported by props during masonry works.

More Information

More Information
Type	Box Lintels
Loading	Standard Duty
Length	3900mm
Weight	55.340000
Manufacturer	Keystone
Sap Id	KBX239

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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