Suitable for gravity drainage and sewerage installations at depths of up to 10m. Holds water to stop foul air escaping from drainage system. Accepts waste water from kitchens, utility rooms and ground floor bathrooms or rainwater from paved areas or roofs. For Risers to raise gullies by up to 200mm. Polypropylene Construction Plastic Removable Grid Supplied Push-Fit Connection Ring Seal Joints Suitable for Gravity Drainage Install to Depths of 0.35m Easy-Removed, Sealed Dip Tube Back Inlet Socket Plug Easily Removed - No Need to Drill Polypropylene Construction Plastic Removable Grid Supplied Push-Fit Connection Ring Seal Joints Suitable for Gravity Drainage Install to Depths of 0.35m Easy-Removed, Sealed Dip Tube Back Inlet Socket Plug Easily Removed - No Need to Drill