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Lintel Type : 100mm Wide Box Lintels
Lintel Duty : Heavy Duty
Catnic
Catnic BHD100 Heavy Duty 100mm Box Lintel
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The Catnic BHD100 Heavy Duty 100mm Box Lintel is a steel lintel designed for structural openings in internal load-bearing masonry walls. Suitable for specified masonry, floor and roof loading conditions, including concrete floor and point loads, the BHD100 combines a strong box-section profile with Catnic's galvanised and black powder-coated Duplex corrosion protection. Wade offers lengths from 900mm to 4800mm, with safe working loads of 29kN, 39kN or 51kN depending on the selected length.
Catnic BHD100 key features
Heavy duty construction
Designed for internal load-bearing masonry walls requiring a higher load capacity than a standard-duty box lintel.
100mm masonry walls
Specified for 100mm internal brick or block wall construction, subject to Catnic's technical requirements.
Up to 51kN loading
Published safe working loads range from 29kN to 51kN, depending on lintel length.
Floor and roof load support
Suitable for specified floor and roof loading conditions, including concrete floors and point loads, where the structural design permits.
Integral plaster key
Incorporates plaster-key features to help provide a suitable surface for plaster finishing.
Duplex corrosion protection
Manufactured from galvanised steel with Catnic's protective black polyester powder coating.
Dimensions and specification
| Manufacturer | Catnic |
|---|---|
| Product code | BHD100 |
| Lintel type | Heavy duty steel box lintel |
| Wall construction | Internal load-bearing masonry wall |
| Wall width | 100mm nominal |
| Cavity | Not applicable |
| Available lengths | 900–4800mm available from Wade |
| Manufacturer's length range | 750–4800mm |
| Nominal height | 143mm, 219mm or 295mm, depending on length |
| Nominal end bearing | 150mm at each end |
| Safe working load | 29–51kN, depending on length |
| Plaster key | Integral |
| Finish | Galvanised steel with black powder coating |
Catnic BHD100 sizes and safe working loads
The BHD100 is manufactured in different section sizes according to length. Both its safe working load and nominal section height should be checked before specifying a lintel.
| Lintel length | Safe working load | Nominal height |
|---|---|---|
| 900–1500mm | 29kN | 143mm |
| 1650–2100mm | 39kN | 143mm |
| 2250–2700mm | 39kN | 219mm |
| 2850–3600mm | 51kN | 219mm |
| 3900–4800mm | 51kN | 295mm |
Where to use a Catnic BHD100 lintel
The Catnic BHD100 is designed for openings in internal load-bearing masonry walls. Catnic specifies it for a range of structural loading conditions, including direct floor or roof loads, concrete floor loads and point loads, provided the selected lintel has sufficient capacity for the proposed construction.
Unlike a cavity-wall lintel, the BHD100 is designed to support masonry in a solid internal wall. Confirm the wall construction and required loading before selecting a length.
Choosing the correct BHD100 length
Catnic's published loading figures use nominal 150mm end bearings at each end. The required lintel length is therefore normally calculated by adding 300mm to the clear structural opening width.
For example, a 1200mm opening would normally require a 1500mm lintel, allowing 150mm bearing at each end. Check that the selected length also provides sufficient safe working load.
Installation considerations
The supporting masonry must be suitable for the loads transferred through the lintel. Follow Catnic's installation guidance and the project structural design, including any temporary support requirements during construction.
Related 100mm box lintels
Wade also supplies the Catnic BSD100 standard duty box lintel and the Catnic BXD100 extra heavy duty box lintel.
Browse Wade's 100mm box lintel collection to compare alternative duty ratings and available lengths.
Technical downloads
Frequently asked questions
What is the Catnic BHD100 used for?
The BHD100 is a heavy duty steel box lintel designed for internal load-bearing masonry walls. It can support specified masonry, floor and roof loading conditions where its published capacity is sufficient.
Can a Catnic BHD100 be used in an external wall?
Catnic's published BHD100 specifications identify internal load-bearing masonry walls as the intended application. For an external wall, seek technical confirmation and select a lintel specified for the wall construction and exposure conditions.
What is the safe working load of a BHD100 lintel?
The safe working load depends on length. Catnic publishes ratings of 29kN for lengths up to 1500mm, 39kN for 1650–2700mm, and 51kN for 2850–4800mm. Check the table above for the corresponding section height.
What lengths of Catnic BHD100 are available?
Wade offers BHD100 lintels from 900mm to 4800mm. Select the required length from the product options above.
Does the BHD100 have an integral plaster key?
Yes. The Catnic BHD100 incorporates an integral plaster key to help with plaster finishing.
How much end bearing does a BHD100 lintel require?
Catnic's published loading figures use nominal 150mm end bearings at each end. The selected length and load capacity must suit the actual structural opening.
What is the difference between BHD100 and BSD100?
Both are Catnic box lintels for internal masonry walls, but the BHD100 is the heavy duty model and the BSD100 is the standard duty model. Their safe working loads differ by length, so compare the relevant loading tables rather than relying on the duty designation alone.
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Customer Reviews
Overall rating: 4.8 / 5 from 28 reviews.
Good prices for steel beams. The yardman helped load the beam onto my vehicle.
Perfect steels Worked out great for the job Great price to Cheers
Excellent product & service
Have purchased lintels previously from Wade, I wouldn’t hesitate in recommending. Excellent service. They cannot be beaten on price. Quick delivery too.
Store owner replied: Hi Josh Thank you for leaving us a five-star review on our Website. It helps our Community and is appreciated. I am delighted to hear you are happy with your Heavy Duty Box Lintel, Our Competitive Prices and Fast Delivery. It's always great for us to see our Customer's Work in Progress. Thanks for the Image. Your work looks fantastic. Thank you for Buying from us Again, and please do not hesitate to contact us if we can help with anything else. Kind regards Neil Thompson Sales & Operations Manager Wade Building Supplies
Wonderful company. I ordered the wrong lintel size online sent an email to get it changed, the girl in the office was brilliant emailed me back to say the order was amended. Quick delivery in the time slot given. Would not hesitate to use again, it is a real shame that other building companies can not be as efficient as this one. First class service, thankyou very much.
Customer service was amazing. Ordered item knowing the delivery time then needed it quicker made contact by e mail and was called almost immediately. My delivery was moved to overnight and arrived next day Will definitely use this company again
Excellent service
Great service, thank you.
Very good service for delivery
Purchased lintels online. Not only was the price competitive but was delivered within a short time period. Couldn't ask for anymore. Will definitely be using again.
Great service, good communication, very well priced, will use again. Thanks
Great service thank you
Very easy to order, excellent price and very quick delivery. Excellent communication. I Highly recommend and will definitely use again in the future.
Great quality, would buy the same again.
Good quality, I’ll use them again for sure👍
delivery was delayed
Great customer support
Nive and easy ordering process with excellent prices and delivery costs. Kept updated through the process by email and the order was received on time. BHD100 lintel received as advertised, not in place yet, waiting for a builder to come round to do it. Would highly recommend.
Delivered next day as requested.
All good quick delivery
Great Product , great price and speedy delivery
Great product with rapid delivery 👌
Arrived late
Very efficient service
Really easy to order, rapid delivery and good VFM. What's not to like :-)
Quick delivery
Store owner replied: Hi Damian, Thank you for leaving us a review on our Website. It helps our Community and is appreciated. I am delighted to hear you are happy with your Box Lintel. We hope you visit us again, and please do not hesitate to contact me if we can help with anything else. Kind regards Neil Thompson Sales & Operations Manager Wade Building Supplies
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