Fecha de publicación: -- Fuente: WIPO "circular economy" The invention relates to a kit for the construction of a modular furniture element with an interior compartment, comprising a frame (10) provided with a plurality of horizontal and vertical bars (11, 12, 13), a plurality of first panels (20) for the lining of said inner compartment, made of a composite material, one or more second panels (30) mechanically inserted and fixed to said frame (10) for defining said internal compartment, mechanical coupling means (40, 50) configured to couple each of said first panels (20) to a respective second panel (30). The composite material comprises polyester.