Skip to the beginning of the images gallery

Keystone BOX/K-200 Solid Wall Box Lintel 1800mm INS

SKU

KBX218INS

£88.51 £73.76

Product Information

Keystone BOX/K-200 Solid Wall Box Lintel measuring 1800mm (5ft 11in) long, designed for 200mm (7.9in) wide solid walls.
Features built-in insulation (INS) for enhanced thermal efficiency on internal openings.
Perforated along its length to provide a reliable plaster key for finishing.
Supports full wet masonry load immediately after installation, ideal for standard duty projects.
Lintel requires a minimum 150mm bearing each side, bedded on mortar; propping recommended for faster build.

Details

The Keystone BOX/K-200 Solid Wall Box Lintel 1800mm INS is engineered specifically for builders and site managers working with 200mm solid walls. Its integrated insulation improves thermal performance, making it a practical choice for internal load-bearing openings where energy efficiency matters. Please note, lintels must be installed with adequate bearing and bedding as detailed below.

Application

This box lintel is ideal for supporting internal door and window openings in solid masonry walls between 100mm and 215mm thick. Its robust design carries the full wet masonry load immediately on installation, ensuring structural reliability on standard duty projects such as residential extensions or refurbishments. The perforations along the lintel length provide a key for plaster, simplifying finishing work on site.

Dimension

Length: 1800mm (5ft 11in)
Height: 150mm (5.9in)
Width: 200mm (7.9in)
Suitable for wall widths from 100mm to 215mm

Material

Steel with integrated insulation for improved thermal efficiency

Type

Box lintel for solid masonry walls

Lintels require a minimum end bearing of 150mm on each side, bedded on mortar. Propping during construction is recommended to speed up the build process. All images are for illustration purposes only. For technical advice or assistance, please contact our sales office.

More Information

More Information
Type	Box Lintels
Loading	Standard Duty
Length	1800mm
Weight	15.810000
Manufacturer	Keystone
Sap Id	KBX218INS

Customer Reviews

No reviews yet on this product

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