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Keystone BOX/K-100 Solid Wall Box Lintel 3900mm

SKU

KBX139

£229.92 £191.60

Product Information

Keystone BOX/K-100 solid wall box lintel measuring 3900mm (12ft 9in) length for reliable support.
Designed for internal openings with 100mm to 215mm wide solid masonry walls.
Standard duty lintel ideal for carrying full load of wet masonry immediately after installation.
Requires minimum 150mm end bearing each side, to be bedded on mortar for stability.
Lintel should be propped during installation to speed construction and ensure safety.

Details

The Keystone BOX/K-100 3900mm solid wall box lintel is engineered for builders and contractors working with 100mm solid masonry walls. Its robust design supports standard loads for internal openings, making it a dependable choice for structural integrity on site. Please note lintels must be installed with appropriate bearing and propping as detailed below.

Application

Specifically crafted to support internal openings in solid walls ranging from 100mm to 215mm thickness, this box lintel carries the full load of wet masonry as soon as it is laid. It is commonly used in residential and commercial projects where a durable, standard-duty lintel is required to maintain wall strength during construction. Proper installation with minimum 150mm bearing at each end bedded on mortar is essential to ensure safety and performance.

Dimension

Length: 3900mm (12ft 9in)
Height: 215mm
Width: 95mm

Material

Precast concrete

Type

Box lintel for solid masonry walls

All lintels must have a minimum bearing of 150mm on each side, laid on mortar, and should be propped during installation to facilitate faster and safer construction. For advice tailored to your specific project, please contact our sales team.

More Information

More Information
Type	Box Lintels
Loading	Standard Duty
Length	3900mm
Weight	50.970000
Manufacturer	Keystone
Sap Id	KBX139

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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