Catnic Heavy Duty (Shorter Lengths) 215mm Solid Wall Box Lintel CN71C by Catnic Catnic Heavy Duty (Shorter Lengths) 215mm Solid Wall Box Lintel CN71C by Catnic
Catnic Heavy Duty (Shorter Lengths) 215mm Solid Wall Box Lintel CN71C by Catnic Catnic Heavy Duty (Shorter Lengths) 215mm Solid Wall Box Lintel CN71C by Catnic
Catnic Heavy Duty (Shorter Lengths) 215mm Solid Wall Box Lintel CN71C by Catnic Catnic Heavy Duty (Shorter Lengths) 215mm Solid Wall Box Lintel CN71C by Catnic
Catnic Heavy Duty (Shorter Lengths) 215mm Solid Wall Box Lintel CN71C by Catnic Catnic Heavy Duty (Shorter Lengths) 215mm Solid Wall Box Lintel CN71C by Catnic
Catnic Heavy Duty (Shorter Lengths) 215mm Solid Wall Box Lintel CN71C by Catnic
Catnic Heavy Duty (Shorter Lengths) 215mm Solid Wall Box Lintel CN71C by Catnic
Catnic Heavy Duty (Shorter Lengths) 215mm Solid Wall Box Lintel CN71C by Catnic
Catnic Heavy Duty (Shorter Lengths) 215mm Solid Wall Box Lintel CN71C by Catnic
Lintel Type : 215mm Solid Wall Lintels
Lintel Duty : Heavy Duty

Catnic

Catnic CN71C Heavy Duty Solid Wall Lintel

£131.00
Solid Wall Box Lintel

£109.16 (ex VAT)

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The Catnic CN71C Heavy Duty Solid Wall Lintel is designed for structural openings in 200–215mm external solid brick or block walls. Its steel box-section profile provides support for masonry loads and helps resist twisting during construction. Manufactured from galvanised steel with Catnic's black Duplex corrosion protection finish, the CN71C is available from us in eight lengths from 900mm to 1950mm, with safe working loads of 49kN or 44kN depending on length.

Catnic CN71C key features

Heavy duty loading

Safe working loads of 49kN or 44kN, depending on the selected length and Catnic's loading conditions.

200–215mm external solid walls

Designed for suitable solid brick or block wall construction, rather than conventional cavity walls.

Box-section profile

A rigid steel section designed to support masonry above structural openings and resist twisting during construction.

Duplex corrosion protection

Galvanised steel with Catnic's protective black polyester powder coating.

143mm nominal height

A consistent nominal section height across the CN71C range.

Eight available lengths

Choose from 900mm, 1050mm, 1200mm, 1350mm, 1500mm, 1650mm, 1800mm and 1950mm.

Dimensions and specification

Catnic CN71C technical specifications
Manufacturer Catnic
Product code CN71C
Lintel type Heavy duty steel solid wall lintel
Wall construction External solid masonry wall
Wall thickness 200–215mm
Cavity Not applicable
Available lengths 900–1950mm, eight sizes
Nominal section height 143mm
Nominal end bearings 150mm at each end
Safe working load 44–49kN, depending on length
Nominal weight 14.5kg per metre
Finish Galvanised steel with black powder coating

Catnic CN71C sizes and safe working loads

The safe working load of the CN71C depends on length. All eight sizes have a nominal section height of 143mm, while the overall weight increases with length.

CN71C length, safe working load and nominal weight
Length SWL Weight
900mm 49kN 13.01kg
1050mm 49kN 15.18kg
1200mm 49kN 17.35kg
1350mm 49kN 19.52kg
1500mm 49kN 21.69kg
1650mm 44kN 23.86kg
1800mm 44kN 26.03kg
1950mm 44kN 28.20kg

Where to use a Catnic CN71C lintel

The CN71C is designed for openings in 200mm and 215mm external solid masonry walls. It provides heavy duty support for masonry above windows, doors and other structural openings, provided the applied loads are within the selected lintel's published capacity.

Unlike a combined cavity-wall lintel, the CN71C is specified for solid-wall construction. Check your wall thickness and construction type before ordering.

Choosing the correct CN71C length

Catnic's published loading figures use nominal 150mm end bearings at each end. The required lintel length is therefore normally determined by adding 300mm to the clear structural opening width.

For example, a 1200mm structural opening would normally require a 1500mm lintel to provide 150mm bearing on each side. Also check that the lintel's safe working load is sufficient for the masonry and other structural loads.

Installation considerations

Ensure the supporting masonry provides suitable end bearings and can carry the loads transferred through the lintel. Follow Catnic's current installation guidance and the project structural design, including any temporary support requirements during construction.

For lower loading requirements, compare our Catnic CN71A solid wall lintel, designed for suitable 200–215mm external solid masonry walls.

For longer openings or different heavy duty loading requirements, we also supply the Catnic CN81C Heavy Duty Solid Wall Lintel. Check the dimensions and safe working loads before selecting an alternative.

Technical downloads

Frequently asked questions

What is the Catnic CN71C used for?

The Catnic CN71C is a heavy duty steel lintel designed for 200–215mm external solid masonry walls. It supports masonry above structural openings where the calculated load falls within its published capacity.

What lengths of Catnic CN71C do you supply?

We offer eight sizes: 900mm, 1050mm, 1200mm, 1350mm, 1500mm, 1650mm, 1800mm and 1950mm. Choose your required length from the options above.

What is the safe working load of a Catnic CN71C?

Lengths from 900mm to 1500mm have a published safe working load of 49kN. Lengths from 1650mm to 1950mm have a published safe working load of 44kN, subject to Catnic's specified loading conditions.

Can the CN71C be used in a cavity wall?

Catnic specifies the CN71C for 200–215mm external solid masonry walls. For cavity-wall construction, choose a lintel designed for the relevant cavity and masonry leaf dimensions, or contact our team for technical advice.

How much end bearing does a CN71C require?

Catnic's published safe working loads use nominal 150mm end bearings at each end. Confirm the structural opening dimensions and required loading capacity before ordering.

What is the difference between CN71A and CN71C?

Both are intended for suitable 200–215mm external solid masonry walls. CN71C is the heavy duty model, with published safe working loads of 44–49kN, while CN71A is intended for lower loading requirements. Compare each model's length and loading tables before selecting a lintel.
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Catnic Heavy Duty (Shorter Lengths) 215mm Solid Wall Box Lintel CN71C by Catnic

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