Buck System

A buck system for forming and framing an opening in a poured concrete foundation, the foundation poured between two insulated concrete foundation walls, the buck system comprising:

• a plurality of buck sections of lengths that match the desired dimension of the opening, each of the plurality of buck sections affixed to an adjacent buck section of the plurality of buck sections by brackets forming a closed geometric shape, each of the buck sections having a first side section, a second side section and a center section, the first side section affixed to a first top surface of the center section and the second side section affixed to a second, distal top surface of the center section;
• the first side section having an first side section outer wall, forming a first channel between the inner surface of the first side section outer wall and a first side of the center section;
• the second side section having a second side section outer wall, forming a second channel between the inner surface of the second side section outer wall and a second side of the center section;
• the first channel snuggly accepts an edge of a first insulated concrete foundation wall of the two insulated concrete foundation walls and the second channel snuggly accepts an edge of a second insulated concrete foundation wall of the two insulated concrete foundation walls.