UK's Largest Lintel Range - In Stock

We have one of the UK’s largest single site stock holding of Catnic and galvanized steel lintels carrying every cavity size in standard duty, heavy duty and extra heavy duty profiles up to 6m long.

Every lintel on our website is IN STOCK

Everything in stock+

Thermally Broken Black Catnic Lintel

Catnic & Galvanized lintel super stockists

Fast track lintel specialists

View Range
Internal Solid Wall Standard Duty Box Lintel
Next day delivery available
Guaranteed or a full refund
Learn more
Architectural Cast Stone Cill 140mm High Left-Side
Architectural cast stone in stock
Available for delivery 2-3 days
Catnic Lintel Range

Lintels of all types

UK’s Largest Range – In Stock

We have one of the UK’s largest single site stock holding of Catnic and Stressline lintels carrying over £2.5m worth of lintels in every cavity size in standard duty, heavy duty and extra heavy duty profiles. We carry a full range of wide inner leaf and wide outer leaf lintels as well single leaf lintels, internal solid wall lintels, external solid wall lintels, timber-frame lintels, and closed eaves lintels.

Extreme Load Lintel CXL Installed

Specialist Lintels

Extreme load lintels?

We are the only UK stockist to offer a full range of equivalent extreme load lintels to major brands such as Catnic CXL lintels, IG L6 lintels, Keystone X/K lintels, Birtley SX & Stressline SL/RS lintels. We stock these equivalent lintels up to 6000mm long in a post galvanized finish to BS- EN1461 and can offer next day delivery, Nationwide or a 48 hour click and collect service.

Select your CXL

Announcing our new online name

AL Lintels becomes

For over 30 years, we’ve been Catnic lintel and steel lintel distributors. Over this time we have developed considerable infrastructure to distribute lintels across the whole of the UK via our own fleet of vehicles and our delivery partners.

We are the largest Stressline lintel stockist in the UK and are regarded by Stressline as their main Super Stockist. Our combined lintel stock is over £2.5m worth and we only advertise lintels that we physically have in stock.

Now we’re excited to announce our new online trading name –

Read the blog

Popular product ranges

Below are the most popular lintel styles with product codes that we offer an equivalent to each from stock.

Catnic CG90/100 | Keystone SK90 | IG L1/S 100 | Birtley CB90

Standard Duty Cavity Wall Lintel

Wide inner leaf option also available: CG90/125 | SK90 WIL | LI/S 100 WIL | CB90/130 | SL90 WIL length up to 5100mm

Learn more

Catnic CN71A | Keystone Box/K-200 | IG Box 200 | Birtley SBL 200

Standard Duty External Solid Wall Box Lintel

Heavy duty option also available CN71C | CN81B | CN81C | HD Box/K-200 | HD Box 200 | length up to 5100mm

Learn more

Catnic CX90/100 | IG L5/100 | Birtley HD90 | Keystone CFS/K-90

Extra-Heavy-Duty Cavity Wall Lintel Wide-Inner-Leaf

Extra heavy duty lintels available (236mm high) Available in cavity sizes (mm) 50,70,90,110,130,150 Lengths up to 5100mm

Learn more

Order/Delivery FAQs

  • How can I pay for my order?

    Please add your products to basket and proceed to checkout.

    Alternatively you can ring our sales hotline and place your order over the phone.

  • When will I receive my lintel?

    All items on our website are in stock in large quantities. You can select standard delivery (up to 7 working days).

    Fast Track (2-3 working days) & Next day delivery option is also available at basket.

    All lead times are based on working days (Monday – Friday). Please see our T&C’s for full details and cut off criteria.

  • Is delivery Nationwide?

    Yes, our delivery network covers the whole of mainland England/Wales & Scotland.

    We do not offer delivery to the following only;
    Channel Isles
    Isle of Wight
    Scottish Isles

  • Is Fast Track & Next day delivery guaranteed?

    Yes* – just select fast track or next day delivery  at checkout and you will get a confirmation email to confirm your booked delivery day with a 5 hour time slot for your delivery.

    If we do not achieve the delivery once we accept your order we will refund your deliver fee in full, that’s our delivery service promise!

    If we cannot accept your request then we will refund any amount paid for this service & you will have the option to cancel the order for a full refund.

    *N.B – see time restrictions for order cut offs

    All lead times are based on working days (Monday – Friday)

Steel Lintel FAQs

  • What if you don’t have the lintel code I need?

    We have a technical department that can assist – please call us and ask for lintel technical.

    Our manufacturers also have great technical departments that can assist as below;

    Catnic Technical – 02920 337900

    Stressline Technical – 01455 272457

  • How to install a steel lintel?

    Installation should always be inline with the manufacturers guidelines. If you are in doubt as to the structural performance or suitability of a lintel then please contact the manufacturers technical department before ordering/installation.

    Each lintel is different but most steel lintels should be propped at 1.2m ctrs and not removed until the mortar has cured.

    Minimum recommended end bearing = 150mm. The lintel should be bedded on mortar and levelled both along the lintel and across its width. Full bricks, blocks or padstones should be used as bearing areas. Do not bear onto cut blocks.

    All external wall lintels MUST be installed with a flexible damp proof course (DPC) or cavity tray. In the case of cavity walls the cavity tray should extend not less than 50mm beyond the cavity return.

    Inner and outer leaves supported by lintels should be raised together to avoid excessive eccentricity of loading.

    Masonry must not overhand any flange by more than 25mm.

    Masonry above the lintel should be allowed to cure before applying floor or roof loads.

    Further guidance can be found in the manufacturer’s literature.

  • CXL Extreme Load Lintels – are these made to order?

    No, we stock all CXL style Extreme Load lintels in every cavity size (50,90,110,130,150mm) from 0750mm – 6000mm long.

    We can manufacture any length greater than this if required.

  • Are your lintels equivalent to Catnic / Keystone / IG / Birtley?

    Our lintel range is the largest in the UK amongst any manufacturer.

    We offer the equivalent lintel codes on each of our product pages and provide the loading data of our lintels for cross checking against other manufacturers items. Our lintels are the equivalent in function for each product code, there are often small differences in each manufacturers technical loading data, therefore please check the product specification table for the specific product against your alternative manufacturers code prior to ordering.

    Our own brand lintels are

    • BSI Quality Assurance Accreditation to ISO 9001
    • BS EN ISO 9001

    For further assistance please call our steel lintel technical department prior to ordering.

Installation guidelines

Installation should always be in line with the manufacturer’s guidelines. If you are in doubt as to the structural performance or suitability of a lintel then please contact the manufacturers technical department before ordering/installation.

Further guidance can be found in the manufacturer’s literature.