Modular 4-in-1 terrace spacing aid for even gaps between deck boards. Provides precise, ergonomic measurement marks to remove guesswork during installation. Erosion protection solution: Weatherproof construction delivers reliable support for terraces and adapts to outdoor materials, including pressure-treated timber. Improved ventilation: Innovative design enables optimal airflow through the structure. The spacer regulates moisture and ensures secure fixation of components during installation. Maximum adaptability: Compatible with all brands of composite decking boards. Facilitates safe installation around water features and circulation paths, delivering design flexibility with professional-level precision. Use scenarios - New deck installation with composite boards and a pressure-treated frame, ensuring uniform gaps and stable alignment. - Outdoor areas near pools, fountains, or irrigation where moisture management and airflow are important. - Renovations or multi-brand installations that require reliable alignment and consistent spacing across different decking products. Specifications and compatibility - System: modular 4-in-1 spacing solution - Material: weatherproof construction designed for outdoor use - Compatibility: works with all brands of composite decking boards - Suitable applications: installations around water features and circulation areas - Supports: precise spacing, stable fixation, and professional-level execution