Patent ID: 8240770

Claim:
A three-dimensional article produced from sheet material, comprising a frame unit defining an interior and having a plurality of outer sides made of sheet material each having a different angular disposition, wherein first and second longitudinal ends of said frame unit are interconnected by means of a female fastener embedded in said first longitudinal end and a male fastener introduced through said second longitudinal end and coupled with said female fastener, wherein the first longitudinal end of the frame unit comprises a first side flap formed with at least one first aperture, said first side flap being folded and affixed to a base portion of a frame unit side such that said female fastener when placed on a predetermined region of said base region is embedded within said side flap while being accessible to said male fastener by means of a corresponding aperture, wherein the second longitudinal end of the frame unit comprises a second side flap formed with at least one aperture, said second side flap remaining in an opened position while its at least one second aperture is aligned with said at least one first aperture and said male fastener introduced through said at least one second aperture is coupled with a corresponding embedded female fastener, whereby to form a reinforced connection, the frame unit further comprising a plurality of exterior members, each of which is interconnected by means of a reinforced connection, wherein each exterior member comprises a base portion, a flap inwardly extending from said base portion, and at least one extension outwardly extending from said base portion and provided with a single projection protruding from an outward edge thereof, a first portion of said inward flap being adhesively affixed to said base portion and a second portion of said inward flap being foldable perpendicularly to said base portion.