Abstract: A frame assembly which can be converted to various shapes to hold different articles. Inner and outer frame members are utilized with the inner frame member serving to hold a panel or flat plate thus forming an enclosure. The frame members are connected to joints to form the frame assembly. With each joint having a U-shaped plate housing a fastening element which attaches to each outer frame member in a snap fit relationship. A screw rod and adjusting bolt enable a detachable connection between the U-shaped plate and the fastening element. Dual fins of the fastening element behind corresponding protruded blocks lying within the outer frame to allow for connection between frame the fastening element.