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Below Ground

Harmer SML Below Ground System

The Harmer SML system, with its comprehensive range of fittings and accessories, offers an innovative, whole-building solution for soil, waste and rainwater drainage installations. The system is fully compatible with other market-leading Harmer and Wade drainage products, including roof, floor, shower and channel drains

The Harmer SML socket less lightweight cast iron soil and waste system is BBA certified and meets the Standard of BS EN 877. The SML system combines modern, state-of-the-art drainage technology with the unique characteristics and benefits of cast iron as a preferred material for drainage installations

Download the technical brochure here.

 

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  1. 300mm SML Below Ground Blank End
    300mm SML Below Ground Blank End
    £249.09
    Estimated Delivery date is 03/07/2025
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  2. 150 x 100mm SML Below Ground Reducers
    150 x 100mm SML Below Ground Reducers
    £97.93
    Estimated Delivery date is 03/07/2025
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  3. 200 x 100mm SML Below Ground Reducers
    200 x 100mm SML Below Ground Reducers
    £174.10
    Estimated Delivery date is 03/07/2025
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  4. 200 x 150mm SML Below Ground Reducers
    200 x 150mm SML Below Ground Reducers
    £174.10
    Estimated Delivery date is 03/07/2025
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  5. 250 x 150mm SML Below Ground Reducers
    250 x 150mm SML Below Ground Reducers
    £358.71
    Estimated Delivery date is 03/07/2025
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  6. 300 x 150mm SML Below Ground Reducers
    300 x 150mm SML Below Ground Reducers
    £499.34
    Estimated Delivery date is 03/07/2025
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  7. 250 x 200mm SML Below Ground Reducers
    250 x 200mm SML Below Ground Reducers
    £358.71
    Estimated Delivery date is 03/07/2025
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  8. 300 x 200mm SML Below Ground Reducers
    300 x 200mm SML Below Ground Reducers
    £499.34
    Estimated Delivery date is 03/07/2025
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  9. 300 x 250mm SML Below Ground Reducers
    300 x 250mm SML Below Ground Reducers
    £499.34
    Estimated Delivery date is 03/07/2025
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  10. 100mm SML Below Ground Plain Trap
    100mm SML Below Ground Plain Trap
    £75.97
    Estimated Delivery date is 31/07/2025
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  11. 100 x 100 x 45 Deg SML Below Ground Single Inspection Chamber
    100 x 100 x 45 Deg SML Below Ground Single Inspection Chamber
    £420.32
    Estimated Delivery date is 03/07/2025
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  12. 150 x 100 x 45 Deg SML Below Ground Single Inspection Chamber
    150 x 100 x 45 Deg SML Below Ground Single Inspection Chamber
    £544.71
    Estimated Delivery date is 03/07/2025
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  13. 150 x 150 x 45 Deg SML Below Ground Single Inspection Chamber
    150 x 150 x 45 Deg SML Below Ground Single Inspection Chamber
    £691.14
    Estimated Delivery date is 03/07/2025
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  14. 100 x 100 x 100mm SML Below Ground Double Inspection Chamber - Square
    100 x 100 x 100mm SML Below Ground Double Inspection Chamber - Square
    £493.99
    Estimated Delivery date is 03/07/2025
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  15. 150 x 100 x 100mm SML Below Ground Double Inspection Chamber - Square
    150 x 100 x 100mm SML Below Ground Double Inspection Chamber - Square
    £640.04
    Estimated Delivery date is 03/07/2025
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  16. 150 x 150 x 150mm SML Below Ground Double Inspection Chamber - Square
    150 x 150 x 150mm SML Below Ground Double Inspection Chamber - Square
    £812.14
    Estimated Delivery date is 03/07/2025
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  17. 100 x 100 x 100mm SML Below Ground Double Inspection Chamber - Rectangular
    100 x 100 x 100mm SML Below Ground Double Inspection Chamber - Rectangular
    £972.45
    Estimated Delivery date is 03/07/2025
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  18. 150 x 100 x 100mm SML Below Ground Double Inspection Chamber - Rectangular
    150 x 100 x 100mm SML Below Ground Double Inspection Chamber - Rectangular
    £1,299.81
    Estimated Delivery date is 03/07/2025
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  19. 100mm SML Below Ground Bell Mouth Gulley
    100mm SML Below Ground Bell Mouth Gulley
    £84.22
    Estimated Delivery date is 03/07/2025
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  20. 150mm SML Below Ground Bell Mouth Gulley
    150mm SML Below Ground Bell Mouth Gulley
    £138.53
    Estimated Delivery date is 03/07/2025
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  21. 200mm SML Below Ground Bell Mouth Soild Plate
    200mm SML Below Ground Bell Mouth Soild Plate
    £28.59
    Estimated Delivery date is 03/07/2025
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  22. 150 x 150 x 150mm SML Below Ground Double Inspection Chamber - Rectangular
    150 x 150 x 150mm SML Below Ground Double Inspection Chamber - Rectangular
    £1,621.74
    Estimated Delivery date is 03/07/2025
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  23. 400mm SML Below Ground Pipes - 3 metre length
    400mm SML Below Ground Pipes - 3 metre length
    £1,704.57
    Estimated Delivery date is 03/07/2025
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  24. 200mm SML Below Ground Bell Mouth Grate
    200mm SML Below Ground Bell Mouth Grate
    £19.53
    Estimated Delivery date is 03/07/2025
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  25. 100mm SML Below Ground Puddle Flange
    100mm SML Below Ground Puddle Flange
    £100.74
    Estimated Delivery date is 03/07/2025
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  26. 150mm SML Below Ground Puddle Flange
    150mm SML Below Ground Puddle Flange
    £131.15
    Estimated Delivery date is 03/07/2025
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  27. 110mm Harmer Backflow Valve - Double Flap
    110mm Harmer Backflow Valve - Double Flap
    Was £93.53 Sale Price £72.25
    You Save 23%
    Estimated Delivery date is 17/07/2025
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  28. 110mm Harmer Backflow Valve  - Single Flap
    110mm Harmer Backflow Valve - Single Flap
    Was £56.10 Sale Price £43.69
    You Save 22%
    Estimated Delivery date is 17/07/2025
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  29. 160mm Harmer Backflow Valve - Double Flap
    160mm Harmer Backflow Valve - Double Flap
    Was £154.37 Sale Price £133.21
    You Save 14%
    Estimated Delivery date is 17/07/2025
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