Modular panel system for structures

A modular panel structure comprising:

• a plurality of wall panels for reversible connection;
• a plurality of corner post(s);
• a plurality of middle post(s);
• optionally one or more base tray(s);
• wherein each wall panel of the plurality of wall panels comprises a first connection means for reversibly securing each side of the wall panel to a corner post and/or middle post, and a second connection means located at the bottom for reversibly securing to a top of a wall panel or to the optional base tray;
• wherein the first connection means comprises (i) means to prevent/minimize vertical movement and (ii) means to increase horizontal stability with respect to the wall panel and the corner post/and or middle post;
• wherein assembly and connection of the plurality of wall panels, the plurality of corner post(s), the plurality of middle post(s), and the optionally one or more base tray(s) forms a structure arrangement suitable for indoor or outdoor use.