Ideal for swimming pools, hot tubs, spa pools and many other types of pools. Pool drainage grate made of high quality ABS material, corrosion resistant and durable in use, all finishes are non-toxic, safe and environmentally friendly. Simple installation, convenient to use, there are small holes on the edge of the frame, just install it with screws, just tighten the screws.The small strict grate and anti-vortex design make the water flow stable and efficient without backflow or overflow, making it easier to drain. Anti-suction design prevents debris inhalation during drainage and block drainage channels, can help filter impurities such as sand, hair, smooth drainage, increase work efficiency. Technical features: Material: plastic. Product dimensions: approx. 25.4x25.4x3.1 cm /10.0x10.0x1 , 2 inchPackage List:1 x Pool Drain Cover. Note: 1. Please allow 0-1 inch error due to manual measurement.Thank you for your understanding. 2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as the standard..Items from Sheng Xinshun's shop