The UCL aquatic lighting niche is designed for concrete pools. When used in conjunction with a Hayward CrystaLogic™ or Universal ColorLogic® LED lighting fixture, you get the best quality. Additionally, the non-metallic design requires no bonding or grounding, and uses PVC, unlike expensive metal conduit. All of these features allow UCL Aquatic Lighting Niches to offer shorter installation time, and huge overall savings in materials and labour.