Universal composite decking spacer with 4 thickness settings — precise, durable, and weatherproof Key benefits Precise gap control: Universal spacer offers a 4-step adjustment for accurate gap width, delivering consistently even joint spacing across all composite materials for professional-looking results. Long-term durability: Made from erosion-protection, weather-resistant material designed for years of use without loss of performance or shape. Faster, easier installation: The clamping system secures boards steadily while promoting drainage and constant air circulation, reducing installation time and the risk of trapped moisture or warping. Versatile compatibility: Works with composite decking and pressure-impregnated (pressure-treated) boards; suitable for a wide range of outdoor projects including wet environments. Product features Four selectable thickness options for flexible gap widths to match different decking profiles and design requirements. Universal spacer design for repeatable 4-phase gap setting and uniform joints on every board. Weatherproof, erosion-resistant construction for long-lasting outdoor exposure. Clamping mechanism provides stable hold during fixing and maintains ventilation underneath deck boards. Simple to integrate into terrace systems for durable installations with consistent spacing. Typical applications Backyard composite deck: Ensure uniform gaps, improved airflow beneath boards, and reliable drainage to reduce staining and movement over time. Poolside decking: Maintain safe, consistent joints and durable material resistance to frequent moisture and splash exposure. Garden paths and terraces with pressure-treated boards: Achieve straight, evenly spaced runs and stable fixation when using different board types. How it solves common problems Eliminates uneven gaps and manual measuring errors with a repeatable 4-step spacer setting. Reduces moisture-related issues by improving airflow and drainage under boards. Prevents slipping and movement during installation thanks to the clamping hold. Use this spacer to get precise, durable, and weather-resistant deck installations with consistent joint spacing across composite and pressure-treated decking.