Lintel Type : Cavity Lintels
Cavity Width : 50-65mm
Lintel Duty : Heavy Duty
Thermally Broken : No
Wide Inner Leaf? No
Catnic
Catnic CH50/100 Heavy Duty 50mm Cavity Lintel
£59.16 (ex VAT)
Pickup available at Tipton West Midlands
Usually ready in 4 hours
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The Catnic CH50/100 Heavy Duty 50mm Cavity Lintel is designed for masonry cavity walls with a 50–65mm cavity, a 100–115mm inner leaf and a 100–102mm outer leaf. Its open-back steel profile allows masonry to be built up continuously on both leaves, while integral insulation, a built-in DPC and a plaster key provide practical construction benefits. We supply six lengths from 900mm to 2400mm, with safe working loads of 32kN, 48kN or 45kN depending on length.
Catnic CH50/100 key features
Heavy duty loading
Designed to support specified masonry, timber floor and roof loads in cavity-wall construction.
50–65mm cavity width
Suitable for a 100–115mm inner masonry leaf and a 100–102mm outer leaf.
Open-back construction
Allows masonry to be built up continuously on both leaves and accommodates fair-faced inner leaf masonry.
Built-in DPC
Incorporates a damp-proof course. Additional DPC may be required in some installation or exposure conditions.
Insulation and plaster key
Integral insulation helps reduce thermal bridging, while the plaster key assists with finishing.
Duplex corrosion protection
Manufactured from galvanised steel with Catnic's protective black polyester powder coating.
Dimensions and specification
| Manufacturer | Catnic |
|---|---|
| Product code | CH50/100 |
| Lintel type | Heavy duty cavity wall lintel |
| Cavity width | 50–65mm |
| Inner leaf | 100–115mm |
| Outer leaf | 100–102mm |
| Lengths available | 900–2400mm, six sizes |
| Manufacturer's length range | 900–2400mm |
| Nominal section height | 158mm |
| Nominal end bearings | 150mm at each end |
| Safe working load | 32kN, 48kN or 45kN, depending on length |
| Built-in DPC | Yes. Additional DPC may be required in some situations. |
| Plaster key | Integral |
| Insulation | Integral insulation |
| Finish | Galvanised steel with black powder coating |
Catnic CH50/100 sizes and safe working loads
The safe working load and weight of the CH50/100 vary according to lintel length. The following table covers all six sizes we supply, using Catnic's current specifications.
| Length | Safe working load | Weight |
|---|---|---|
| 900mm | 32kN | 9.73kg |
| 1200mm | 32kN | 12.97kg |
| 1500mm | 32kN | 16.22kg |
| 1800mm | 32kN | 19.46kg |
| 2100mm | 48kN | 27.57kg |
| 2400mm | 45kN | 31.51kg |
Where to use a Catnic CH50/100 lintel
The CH50/100 is designed for heavy duty masonry cavity-wall construction with a 50–65mm cavity. It can support specified masonry, timber floor and roof loads, provided the selected lintel has sufficient capacity for the proposed construction.
Its open-back profile allows masonry to be built continuously on both leaves and is suitable for fair-faced inner leaf masonry.
Choosing the correct CH50/100 length
Catnic's published loading figures use nominal 150mm end bearings at each end. As a general starting point, add 300mm to the clear structural opening width to allow for these bearings.
For example, a 1200mm opening would normally require a 1500mm lintel, with 150mm bearing at each end. The safe working load must also be sufficient for the structure above.
Installation and concrete floor support
Check the cavity width, masonry leaf dimensions and supporting wall construction before installation. Follow Catnic's guidance for end bearings, temporary support and restraint.
When using Catnic CH and CX open-back lintels with concrete floors, build the blockwork tightly against the inner vertical face of the lintel. A mortar joint at the top of the blockwork helps distribute floor-unit loads evenly across the inner flange.
Related Catnic cavity lintels
For lower loading requirements with the same cavity dimensions, compare our Catnic CG50/100 Standard Duty 50mm Cavity Lintel.
For heavy duty construction with a wider cavity, we also supply the Catnic CH70/100 Heavy Duty Cavity Lintel, designed for 70–85mm cavities.
Browse our cavity lintels or Catnic lintel range for other sizes and loading requirements.
Technical downloads
Frequently asked questions
What cavity width is the Catnic CH50/100 designed for?
The CH50/100 is designed for 50–65mm cavities, with a 100–115mm inner masonry leaf and a 100–102mm outer leaf.
What lengths of Catnic CH50/100 do you supply?
We offer six lengths: 900mm, 1200mm, 1500mm, 1800mm, 2100mm and 2400mm. Choose the size you need from the options above.
What is the safe working load of the CH50/100?
Catnic specifies 32kN for lengths between 900mm and 1800mm, 48kN for 1950–2100mm and 45kN for 2250–2400mm, subject to the manufacturer's loading conditions.
Does the CH50/100 have a built-in DPC?
Yes. The CH50/100 incorporates a built-in damp-proof course. Additional DPC may be required depending on installation and exposure conditions.
Does the CH50/100 have integral insulation and a plaster key?
Yes. Catnic supplies the CH50/100 with integral insulation and an integral plaster key.
Can the CH50/100 support concrete floors?
Catnic provides installation guidance for using CH and CX open-back lintels with concrete floors. The blockwork must be tightly built against the inner vertical face, with a mortar joint above it to distribute the floor-unit load evenly over the inner flange. The lintel's structural capacity must also be checked.
How much end bearing does the CH50/100 require?
Catnic's published safe working loads are based on nominal 150mm end bearings at each end. Confirm the lintel length, wall construction and calculated loads before installation.
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