Clark-Drain 600 x 600mm clear opening ductile iron manhole cover and frame with B125 load rating classification. For use in pavement, driveways and precinct areas. B125 loading class, BS EN124 accredited. Includes frame, slide out access, unique corner design to ensure correct orientation of cover, and integral lifting key holes. Kitemark certified. FEATURES INCLUDE: Durable ductile iron cover and frame, Kitemark certified, Closed keyways, Black bitumen coated, One piece solid top.