Crafted with durability and superior thermal efficiency in mind, the Birtley MD90 Medium Duty Cavity Wall Lintel is a vital choice for contemporary cavity wall construction. Specifically designed for 90-105mm cavities with both inner and outer leaves measuring 100mm, this Birtley lintel boasts a Supergalv coating that guarantees remarkable durability and protection against corrosion. With post-fabrication galvanizing, all surfaces are safeguarded, elevating the overall quality and performance. Perfect for structural use, it minimizes thermal bridging by up to 55% compared to standard alternatives, making a valuable contribution to energy-efficient builds.
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:
Crafted with durability and superior thermal efficiency in mind, the Birtley MD90 Medium Duty Cavity Wall Lintel is a vital choice for contemporary cavity wall construction. Specifically designed for 90-105mm cavities with both inner and outer leaves measuring 100mm, this Birtley lintel boasts a Supergalv coating that guarantees remarkable durability and protection against corrosion. With post-fabrication galvanizing, all surfaces are safeguarded, elevating the overall quality and performance. Perfect for structural use, it minimizes thermal bridging by up to 55% compared to standard alternatives, making a valuable contribution to energy-efficient builds.
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
The Birtley MD90 Medium Duty Cavity Wall Lintel offers superior durability, thermal efficiency, and corrosion resistance, ideal for 90-105mm cavities with 100mm leaves.
Birtley 90mm MD90 Medium Duty Cavity Wall Lintel - 750mm
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.
Crafted with durability and superior thermal efficiency in mind, the Birtley MD90 Medium Duty Cavity Wall Lintel is a vital choice for contemporary cavity wall construction. Specifically designed for 90-105mm cavities with both inner and outer leaves measuring 100mm, this Birtley lintel boasts a Supergalv coating that guarantees remarkable durability and protection against corrosion. With post-fabrication galvanizing, all surfaces are safeguarded, elevating the overall quality and performance. Perfect for structural use, it minimizes thermal bridging by up to 55% compared to standard alternatives, making a valuable contribution to energy-efficient builds.
The Birtley MD90 Medium Duty Cavity Wall Lintel combines strength and efficiency, meeting the demands of contemporary construction projects. Crafted from mild steel S275JR and hot-dip galvanized to BS EN ISO 1461 standards, it guarantees robust structural support while resisting corrosion for extended durability.
With a 150mm minimum end bearing and full mortar bed requirements, this lintel ensures precise installation and stability. Whether used in external walls with cavity trays or as part of energy-efficient building designs, it provides reliable performance.
Enhanced Thermal Efficiency
The MD90 features a lack of baseplate and factory-fitted insulation, significantly reducing thermal bridging. This innovation improves thermal performance, with up to 55% better SAP default values, making it a preferred choice for energy-conscious projects.
Superior Protection
The Supergalv coating offers unmatched corrosion resistance and long-term performance in challenging environments. Its post-fabrication galvanizing ensures every surface is fully protected, eliminating vulnerabilities in coating quality.
Precision Engineering
Designed to BS EN845-2 standards, the Birtley MD90 complies with strict European and UK regulations. Fire-rated for 60 minutes and insulated with expanded polystyrene (BREEAM rating A+), it balances safety and sustainability without compromise.
Sustainable Solutions
From residential to commercial builds, the Birtley MD90 Medium Duty Cavity Wall Lintel adapts to various project needs while maintaining its exceptional quality and compliance with rigorous standards.
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.
