Belled end utility duct with a trade size of 5-inches, has 5.563-Inch outside diameter and 0.126-Inch thickness. The 20-ft duct has PVC construction for high insulation and durability. It is suitable to use in concrete encased burial applications. It is perfect for commercial, industrial and utility usage. The utility duct meets ASTM F-512 and NEMA TC-8 standards.