Home / Manhole Covers / 18″ X 24″ Manhole Cover (Heavy Duty) 18″ X 24″ Manhole Cover (Heavy Duty) Heavy duty rectangular manhole cover with frame used in housing projects, backyard, walkway, and residential areas. Download Catalogue KBSB – Manhole Cover Series Material: Ductile Iron Size: 18″ X 24″ X 2″ (H) Related products Ductile Iron Telecom Manhole Cover 7E 18″ X 24″ PE Manhole Cover SAMVA 6″ X 9″ Stainless Steel Manhole Step Steel Cover With Hinges 18″ X 24″ Manhole Cover (Light Duty) Heavy Duty Surface Box With Hinges