BS Fittings-Covers & Domes Dome Lid Material: Malleable Iron Finishing: Hotdip Galvanized Part Number Size(mm) Pcs/Carton DL20-H 20 300 DL25-H 25 300 Circular Box Cover Material: Steel Finishing: Electro-Galvanized &Hotdip Galvanized Part Number Size(mm) Hot Dip Galvanized Electro Galvanized C2025-H C2025-EG 20&25 C32-H C32-EG 32 Rubber Gaskets Material: Rubber Part Number Size(mm) RG2025 20&25 RG32 32