To use this diced foam block, simply place it inside your GRW - DRW2 standard 2U drawer. It will fit right in and keep your items organized. Make sure to handle it gently when installing to avoid any damage. For maintenance, keep it away from sharp objects and excessive moisture. If it gets dirty, you can use a soft, dry cloth to clean it. This block is durable, but treat it well for long - lasting use.