White plastic H core box. The Core Box will hold up under all weather conditions and is ideal for outdoor and underground usage. Strong and stackable with interlocking design. Reusable / Washable. Snap Fit / Secure Covers. Each box holds 10 feet of core. H(2.5"") Box & Lid: 25-3/8"" L x 14-5/8"" W x 3-1/8"" H (3"" stack height), weight: 3.14 lb .