This utility box extension from Oldcastle Infrastructure is expertly crafted from reinforced concrete, designed specifically for electrical box applications. With a length of 12 inches, it provides a robust solution for enhancing the functionality of utility installations in non-vehicular traffic situations. The durable construction ensures reliable performance while the actual load rating will depend on the specific box and cover combination used. This extension is essential for adapting existing setups to meet evolving infrastructure needs while maintaining integrity and safety.