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Keystone BOX/K-200 Solid Wall Box Lintel 900mm INS

SKU

KBX209INS

£44.05 £36.71

Product Information

Keystone BOX/K-200 insulated box lintel, 900mm (35½") length for solid walls 100-215mm wide.
Designed for standard load support on internal openings in 200mm solid masonry walls.
Includes built-in insulation to enhance thermal efficiency on site.
Perforated design provides a secure plaster key for finishing.
Must be bedded on mortar with a minimum 150mm bearing each side; lintel propping recommended to speed construction.

Details

The Keystone BOX/K-200 900mm INS is a robust insulated box lintel specifically engineered for supporting standard loads over internal openings in 200mm solid masonry walls. Ideal for builders and site managers who require dependable structural support combined with enhanced thermal performance, this lintel ensures compliance with modern building standards. Please note, this lintel suits wall widths from 100mm up to 215mm and must be installed with proper bearing and bedding.

Application

This box lintel is primarily used to span internal openings such as doorways and window reveals within solid masonry walls. Its insulated core improves thermal efficiency, reducing heat loss through structural elements. The perforated outer surface provides an effective key for plaster, ensuring a smooth finish. It is designed to carry the full wet masonry load immediately upon installation, making it a reliable choice for new builds and refurbishment projects where speed and performance are critical.

Dimension

Length: 900mm (35½")
Width: 200mm (7¾")
Height: 150mm (6")
Suitable for wall thickness: 100-215mm (4"-8½")

Material

Galvanised steel with integrated insulation core

Type

Box lintel for solid masonry walls
Standard duty load bearing lintel

Important: Keystone BOX/K-200 lintels require a minimum 150mm bearing each side, bedded on mortar. Propping during installation is recommended to ensure structural integrity and support speed of construction. For further technical advice, please contact our sales team.

More Information

More Information
Type	Box Lintels
Loading	Standard Duty
Length	900mm
Weight	7.910000
Manufacturer	Keystone
Sap Id	KBX209INS

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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