The document provides instructions for building T-Walls, which are modular wall panels on casters that allow for quick configuration of team spaces. Each T-Wall unit consists of two nearly identical wood-framed walls that connect together. They can be skinned with materials like showerboard or acrylic to create dry-erase surfaces. The walls are about 6'6" tall for comfortable usability. Basic instructions are provided for building the frames from 2x4 lumber and attaching casters and surface materials. Sources are also listed for purchasing components.