Skip to the beginning of the images gallery

Keystone BOX/K-150 Solid Wall Box Lintel 900mm INS

SKU

KBX1509INS

£35.22 £29.35

Product Information

Keystone BOX/K-150 Solid Wall Box Lintel, 900mm (35½") length for 150mm (6") solid walls
Includes insulation for enhanced thermal efficiency – ideal for internal wall openings
Perforated design offers excellent plaster key for superior finishing
Supports full wet masonry load immediately after installation
Minimum 150mm (6") bearing on each end, must be bedded on mortar; lintels should be propped during construction for safety

Details

The Keystone BOX/K-150 Solid Wall Box Lintel 900mm INS is specifically designed for trade professionals requiring dependable support for internal openings in solid walls of 150mm thickness. Featuring built-in insulation, this lintel improves thermal performance without compromising structural reliability. Please note the lintel is supplied in 900mm length increments.

Application

Ideal for builders and site managers working on solid masonry walls between 100mm and 215mm thickness, this standard duty box lintel carries the full wet masonry load immediately after installation. Its perforated surface provides an excellent key for plaster, ensuring a neat finish. Use in internal openings such as doorways and window reveals where insulation is beneficial.

Dimension

Length: 900mm (35½")
Height: 150mm (6")
Width: 145mm (5¾")
Suitable for wall widths: 100–215mm (4"–8½")

Material

Galvanised steel with integrated insulation
Perforated for plaster keying

Type

Box lintel for solid masonry walls
Standard duty structural support lintel

Ensure a minimum bearing length of 150mm (6") on each side, bedded firmly in mortar. For safe installation and to maintain speed on site, lintels should be propped until masonry is self-supporting. For further technical advice or assistance, please contact our sales team.

More Information

More Information
Type	Box Lintels
Loading	Standard Duty
Length	900mm
Weight	7.230000
Manufacturer	Keystone
Sap Id	KBX1509INS

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