Contour fiberboard tubes Contour Paperboard Products, Inc. has introduced new product catalogs and literature for its 2003 product line. Contour manufactures fiberboard tubes that are available in 14 geometric shapes and over 157 different sizes. The tubes are produced from multiple plys of fiberboard paper. The laminated construction makes them strong and allows the customer to combine sections with plywood, solid stock or particleboard. The tubes can be fabricated with HPL, veneers, metals, fabric or paint.