Catnic CN71A Steel Box Lintel For External Solid Wallsis a standard duty galvanised steel lintel for outer leaves measuring 200–215mm. Designed for solid wall construction, it carries loads of up to 29kN and spans up to 2700mm with 150mm end bearings. The lintel offers strong support for brick and block formats and resists corrosion over time. Each unit weighs between 8,630g and 25,890g depending on length, with a consistent nominal height of 143mm.
Delivery is free to Mainland England and Wales. Deliveries are chargable to Scotland.
Once the order is placed, our courier will call you within 3 working days to arrange a delivery date. If you do not hear from the courier within 3 days, please get in touch with us. The majority of deliveries are made within 7 days, occasionally a little longer during peak periods.
Deliveries are made between 08:00 and 18:00 on the day, we request the driver calls you one hour before with an advised time.
Delivery is made via a kerbside tail lift lorry, we cannot deliver to sloping ground as the tail lift must be able to lay flat.
The road must be wide enough for a lorry to fit down and free from obstruction, if there are any access restrictions, please contact us.
Deliveries must be signed for, please report any damages to us within 24 hours.
We offer all bricks with a tail lift offloading service, Please familiarise yourself with the information below.
Crane offloading is available as a premium service for some bricks.
FAQ
All of our C16 and C24 graded timber is regularised
Regularised timber is timber that has been processed to have a uniform shape and size. This means that the wood has been sawn and planed to remove any irregularities and ensure that each piece of wood has consistent dimensions. Regularised timber is often used in construction, particularly in the framing of buildings, as it is easier to work with and can be more efficiently installed than irregularly shaped timber.
We have one of the largest ranges of timber lengths, dimensions and grades available to buy online.
The variation you require will determine the exact lead time and delivery method.
Most orders arrive within 3-4 days, the maximum is 7 days. Please get in touch before you order if you need a specifc delivery date.
Delivery charges vary by postcode. To find out the delivery charge, add the item(s) you require to your basket and select CALCULATE SHIPPING at the bottom of the page.
Some orders are delivered on our own vehicles based in Leicestershire and Cheshire. We also use carriers including Yodel and Tuffnells. For some sizes and locations we use regional distributors.
If you'd prefer crane offloading rather than tail lift vehicle offloading for your brick order then this service is available for the majority of bricks that we sell. Charges are shown at checkout.
For deliveries of less than 6 packs then Taillift offloading is normally a more cost effective option
Downloadable information can be found here:
Armstrong Cheshire supply the full range of Catnic Lintels. If you don't see the lintel you need on our website, choose from the Catnic Lintel Selector Brochure and give us a call 01625 322269
Downloadable information can be found here:
Catnic CN71A Steel Box Lintel For External Solid Wallsis a standard duty galvanised steel lintel for outer leaves measuring 200–215mm. Designed for solid wall construction, it carries loads of up to 29kN and spans up to 2700mm with 150mm end bearings. The lintel offers strong support for brick and block formats and resists corrosion over time. Each unit weighs between 8,630g and 25,890g depending on length, with a consistent nominal height of 143mm.
Delivery is free to Mainland England and Wales. Deliveries are chargable to Scotland.
Once the order is placed, our courier will call you within 3 working days to arrange a delivery date. If you do not hear from the courier within 3 days, please get in touch with us. The majority of deliveries are made within 7 days, occasionally a little longer during peak periods.
Deliveries are made between 08:00 and 18:00 on the day, we request the driver calls you one hour before with an advised time.
Delivery is made via a kerbside tail lift lorry, we cannot deliver to sloping ground as the tail lift must be able to lay flat.
The road must be wide enough for a lorry to fit down and free from obstruction, if there are any access restrictions, please contact us.
Deliveries must be signed for, please report any damages to us within 24 hours.
We offer all bricks with a tail lift offloading service, Please familiarise yourself with the information below.
Crane offloading is available as a premium service for some bricks.
All of our C16 and C24 graded timber is regularised
Regularised timber is timber that has been processed to have a uniform shape and size. This means that the wood has been sawn and planed to remove any irregularities and ensure that each piece of wood has consistent dimensions. Regularised timber is often used in construction, particularly in the framing of buildings, as it is easier to work with and can be more efficiently installed than irregularly shaped timber.
We have one of the largest ranges of timber lengths, dimensions and grades available to buy online. The variation you require will determine the exact lead time and delivery method.
Most orders arrive within 3-4 days, the maximum is 7 days.
Please get in touch before you order if you need a specific delivery date.
Delivery charges vary by postcode. To find out the delivery charge, add the item(s) you require to your basket and select CALCULATE SHIPPING at the bottom of the page. Some orders are delivered on our vehicles based in Leicestershire and Cheshire. We also use carriers including Yodel and Tuffnells. For some sizes and locations, we use regional distributors.
If you'd prefer crane offloading rather than tail lift vehicle offloading for your brick order then this service is available for the majority of bricks that we sell. Charges are shown at checkout.
For deliveries of less than 6 packs then Taillift offloading is normally a more cost effective option
Downloadable information can be found here:
Armstrong Cheshire supply the full range of Catnic Lintels. If you don't see the lintel you need on our website, choose from the Catnic Lintel Selector Brochure and give us a call 01625 322269
I'm using it to extend the height of a gable wall window so I can see the hills and the sunset without crouching down! Good price and timely delivery. Thanx
Catnic CN71A Steel Box Lintel For External Solid Walls - 900mm
is backordered and will ship as soon as it is back in stock.
Couldn't load collection availability
Delivery charges will vary depending on your location.
To find out delivery cost to your postcode, add the products your require to your basket and then review your basket, entering the delivery postcode
We look to dispatch all products same-day where possible, we use a close network of couriers we have worked alongside for a number of years and will share any and all shipping updates with you directly.
Catnic CN71A Steel Box Lintel For External Solid Wallsis a standard duty galvanised steel lintel for outer leaves measuring 200–215mm. Designed for solid wall construction, it carries loads of up to 29kN and spans up to 2700mm with 150mm end bearings. The lintel offers strong support for brick and block formats and resists corrosion over time. Each unit weighs between 8,630g and 25,890g depending on length, with a consistent nominal height of 143mm.
Catnic CN71A Steel Box Lintel For External Solid Wallsis a standard duty galvanised steel lintel for outer leaves measuring 200–215mm. Designed for solid wall construction, it carries loads of up to 29kN and spans up to 2700mm with 150mm end bearings. The lintel offers strong support for brick and block formats and resists corrosion over time. Each unit weighs between 8,630g and 25,890g depending on length, with a consistent nominal height of 143mm.
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Engineered for Solid Wall Builds
The Catnic CN71A lintel is tailored for external solid walls where cavity construction is not required. Its robust box section delivers consistent structural support for 200–215mm brickwork.
This makes the lintel ideal for applications such as boundary walls, standalone brickwork, or solid wall housing structures across residential or light commercial use.
Standard Duty Load Support
With a maximum safe working load (SWL) of up to 29kN, the CN71A meets the needs of typical solid wall load-bearing demands. The design ensures compliance with building regulations where standard duty performance is sufficient.
Galvanised Steel Protection
Manufactured from galvanised steel, this lintel resists rust and wear, ensuring it performs long-term under exposure to external elements.
Size Range for Build Flexibility
Available in 150mm increments from 900mm to 2700mm, the CN71A allows builders to match wall opening requirements precisely, reducing unnecessary cutting or compromise.
Accurate Installation Advice
When installing, ensure a 150mm bearing at both ends and maintain alignment with the brickwork for full load transfer. No inner leaf is required due to its solid wall application.
Have a question?
If you have any questions about our products or would like to learn more about our shipping options please feel free to contact one of our team today.
