This U.S. industry comprises establishments primarily engaged in manufacturing ceramic wall and floor tiles. Manufacturing structural clay tiles--are classified in U.S. Industry 327121, Brick and Structural Clay Tile Manufacturing; Manufacturing clay drain tiles--are classified in U.S. Industry 327123, Other Structural Clay Product Manufacturing; and Manufacturing resilient flooring and asphalt floor tiles--are classified in U.S. Industry 326192, Resilient Floor Covering Manufacturing.