The Keystone S/K-90 Cavity Lintel is a standard load lintel designed to support structural openings with cavity widths between 90–105 mm. It provides reliable support across door and window openings and is suitable for a wide range of domestic and light commercial building projects. The lintel is designed so that blockwork can be built tight against its inner face, ensuring proper alignment and load transfer.
Before installing floor units, a mortar bed should be placed on top of the blockwork to ensure even distribution of load. For best results and to maintain construction speed, it is recommended that lintels are propped during installation. The product descriptions provided serve as a general guide, and further technical assistance is available on request.
Available Lengths
900 mm
1200 mm
1500 mm
1800 mm
2400 mm
3000 mm
FAQs
What cavity width is the S/K-90 lintel designed for?
It is suitable for cavity widths between 90 and 105 mm, making it ideal for standard cavity wall construction.
Do lintels need to be propped during installation?
Yes. Propping is recommended to maintain stability and ensure faster, safer construction until the masonry has fully cured.
Why is a mortar bed required on top of the blockwork?
The mortar bed helps evenly distribute the load from floor units or additional masonry, preventing point loading and ensuring structural integrity.
Absolutely. Check availability at your nearest branch during checkout or contact us directly.
Do you offer bulk pricing or trade discounts?
Yes, we offer competitive rates for trade customers and bulk orders. Contact our team for a tailored quote.
What if the product arrives damaged?
Please notify us within 48 hours of delivery. We’ll arrange a prompt replacement or refund as needed.
How fast is the delivery time?
Most items are delivered within 2–5 working days, depending on stock and location. Some products may take longer times.
What is the Return Policy?
We accept most returns within 14 days of delivery, provided the items are unused, in their original packaging, and in resalable condition. Please contact our customer service team to arrange a return or discuss any concerns.
Over 35 Years of Trading
+£3M Stock Value
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10 Branches Across London & South East
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