The 4-Way Joint (for 2" thick boards), allows connections in designs where four boards intersect. The 4-Way Joint can also be used to cross-brace, preventing ‘push-out’ caused by frost expansion. To use the Four-Way Joint for this application, attach a Stacking Joint Bracket (not included), to either end of the cross-brace timber, one end up and the other end down. Connect the opposing side walls with one half of a Four-Way Joint on both side walls. The Four-Way Joint will slot into the aperture of the joint below, exactly as the Stacking Joint does. When used for the cross-bracing function you only need one Four-Way Joint for each cross-braced level. Joints can be used with any 2 inch boards or standard 2” x 6” lumber.