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£16.33 Incl. VAT
These low back P traps are designed to stop foul odours from being able to leave the drainage system.
They are normally situated up against a wall and are used to take away rainwater or appliance waste where permitted. A hopper like this rectangular hopper is normally attached directly into this low back P trap.
It should be noted that the top of any underground trap should be situated no less than 150mm below the damp proof course of the building to prevent any leaks from damaging the building.