Designed for strength and efficiency, this Concrete Hollow Block 7.3N 440 x 215 x 215mm is a practical building component used in structural and partition wall applications. Suitable for both internal and external use, its hollow core construction supports faster installation and improved thermal performance.
These 7.3N concrete blocks are a preferred choice for load-bearing walls in residential, commercial, and industrial projects. Their size reduces the number of blocks needed per square metre, helping cut down build time. The hollow design also allows for easier handling and can accommodate reinforcement or insulation where required.
Technical Specifications
Material: Dense aggregate concrete
Strength: 7.3N/mm² compressive strength
Dimensions: 440mm (L) x 215mm (H) x 215mm (W)
Weight: Approx. 27kg per block
Configuration: Two-core hollow design
Use: Suitable for above and below-ground applications
Fire Rating: Class A1 non-combustible
Thermal Conductivity: 1.13 W/mK (based on 3% moisture content)
For more information about concrete blocks, click here.
Armstrong Cheshire
Concrete Blocks
{PRODUCT_DESCRIPTION}
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:
Designed for strength and efficiency, this Concrete Hollow Block 7.3N 440 x 215 x 215mm is a practical building component used in structural and partition wall applications. Suitable for both internal and external use, its hollow core construction supports faster installation and improved thermal performance.
These 7.3N concrete blocks are a preferred choice for load-bearing walls in residential, commercial, and industrial projects. Their size reduces the number of blocks needed per square metre, helping cut down build time. The hollow design also allows for easier handling and can accommodate reinforcement or insulation where required.
Technical Specifications
Material: Dense aggregate concrete
Strength: 7.3N/mm² compressive strength
Dimensions: 440mm (L) x 215mm (H) x 215mm (W)
Weight: Approx. 27kg per block
Configuration: Two-core hollow design
Use: Suitable for above and below-ground applications
Fire Rating: Class A1 non-combustible
Thermal Conductivity: 1.13 W/mK (based on 3% moisture content)
For more information about concrete blocks, click here.
Armstrong Cheshire
Concrete Blocks
{PRODUCT_DESCRIPTION}
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
A 440×215×215mm dense concrete hollow block (7.3N strength) for heavy-duty construction. Ideal for load-bearing walls, retaining walls, foundations and other structural work. Hollow core reduces weight and allows filling with concrete/rebar for added strength. Suitable for internal & external use, including below DPC. Meets BS EN 771-3 standards – a robust, versatile block for reliable performance in any build.
Concrete Hollow Block 7.3N 440 x 215 x 215mm
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.
Designed for strength and efficiency, this Concrete Hollow Block 7.3N 440 x 215 x 215mm is a practical building component used in structural and partition wall applications. Suitable for both internal and external use, its hollow core construction supports faster installation and improved thermal performance.
These 7.3N concrete blocks are a preferred choice for load-bearing walls in residential, commercial, and industrial projects. Their size reduces the number of blocks needed per square metre, helping cut down build time. The hollow design also allows for easier handling and can accommodate reinforcement or insulation where required.
Technical Specifications
Material: Dense aggregate concrete
Strength: 7.3N/mm² compressive strength
Dimensions: 440mm (L) x 215mm (H) x 215mm (W)
Weight: Approx. 27kg per block
Configuration: Two-core hollow design
Use: Suitable for above and below-ground applications
Fire Rating: Class A1 non-combustible
Thermal Conductivity: 1.13 W/mK (based on 3% moisture content)
For more information about concrete blocks, click here.
No reviews
Concrete Hollow Block 7.3N 440x215x215mm
The 7.3N Hollow Dense Concrete Block is designed for applications where a lower weight yet high-strength wall is required, either above or below a damp-proof course (DPC)
Can be reinforced with steel or concrete to form high-strength walls. Suitable for retaining walls, agricultural applications, commercial and industrial buildings, storage bunkers, and pond or pool linings
Specifications
Dimensions: 440mm x 215mm x 215mm
Material: Dense Concrete
Strength Rating: 7.3N
Colour: Natural
Applications
Ideal for use in foundations, lower storeys of buildings, piers under high vertical loads, and multi-storey buildings
Product Overview
This 440mm x 215mm x 215mm hollow concrete block is a versatile and durable building material, ideal for a range of construction projects
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.
