Check the listing for details. 2 Pack 50mm ID Atrium Drain Grate Cover UPVC Sewer Drain Pipe Fitting. Condition: New. Listed at 11.00 USD. The atrium grates are placed on top of drain pipelines to protect the drainage system from debris entering and being clogged up while allowing excess surface water to flow through. Widely used in sewage, farmland irrigation, mulched landscape beds, outdoor lawn areas, window wells, etc.Specification:Color: GrayMaterial: UPVC (Unplasticized Polyvinyl Chloride)Shape: RoundNominal Diameter: DN40Height: 52mm / 2.05 inchInner Diameter: 50mm / 1.97 inchOuter Diameter: 56mm / 2.2 inchPacking List: 2pcs x Atrium Grate CoverAdvantage:UPVC connectors with thickened inner walls feature a smooth surface, are odorless, neutral, lightweight, and watertight, do not corrode or crack easily and last for a long time even with zero maintenance.Instruction:The socket openings are bonded by UPVC special glue (NOT included here).