The Fibro-Floor family includes the grades KFPA, FFDL, and FFHL. KFPA consists of cork and cotton. FFDL is based on natural fibers, recycled fibers, and special binders. FFHL is composed of leather fibers, recycled fibers, and special binders. The appropriate grade depends on whether the focus is on cushioning, structure, material characteristics, or specific requirements in the floor construction.