The GD 4 (4″ or 102-110mm pipe size) is commercially certified and used in the outlet connections of floor drain bodies, or inside floor drain strainers, to seal the opening and prevent odours, sewer gases and insects from entering the floor drain grate.

The Green Drain's four flexible silicone sealing ribs ensure easy installation into openings with variations in size. The drain opens to allow drainage and closes when there is no water flow. All Green Drain products can be used in new construction or retrofit applications where trap primers were never installed.

For a 90mm grate opening with a 100mm drainpipe.