Concrete construction; seamless strenex inner liner; sealed with all weather superseal; weight 2,138 pounds; 2" thick walls.
Extra heavy concrete construction in cover; seamless strenex inner liner; weight 2,510 pounds; 2" thick walls.
Extra heavy concrete construction in cover; seamless ABS marbelon cover carapaces, weight 2, 709; 2 1/4" thick walls.
