The 30” x 48” x 24” Tier 15 Vault is a robust polymer concrete enclosure designed for underground utility applications. It provides a secure and durable housing for electrical, telecom, CATV, irrigation, and other utility systems. Engineered for long-term performance, this vault resists corrosion, supports pedestrian and light-duty traffic, and integrates seamlessly with Christy lids and accessories for professional installations.