Sizes and connections: Width options for a single drainage board are 7.1, 7.9, 9.8, and 11.8 inches; length is 39.4 inches. The three hole plug in connections are interlocking, allowing drain grates to be joined for extra length. Gutter overflow and multi use: Drainage cover can function as a cushion for flowerpots or flower boxes, aiding basin ventilation and drainage of rainwater and flushing water. It can also be used as indoor balcony floor paving and for indoor landscaping. Pool grille features: Made with ABS plastic to create a rigid structure. The grate integrates on the pool overflow corner with a seamless connection that enhances safety and grate performance. The drain cover is lightweight and suitable for sewer maintenance. Grille surface design: The surface has dense diamond shaped textures to prevent slipping and falling on the slippery poolside, contributing to toughness. Flexible design: The system offers 360 degree turning movable adjustment and is not limited to a specific pool shape. It can turn effectively, improving practical performance and adapting to various ditch types and curves. Use scenarios: Install as an extended shower drain by linking multiple units for a longer run. Use in balcony or indoor landscaping as a gutter overflow cover that supports pots and facilitates ventilation and drainage. Place near pool overflow corners to provide safe, maintenance friendly drainage.