These polypropylene leg clamps secure one-inch diameter legs (customer supplied) with stainless steel hardware to the four corners of P SCROG 4×4 or 2×4 frames. The addition of leg clamps allow the 4×4 or 2×4 to free stand in trays, on tables, and floors with PVC legs. The Polypropylene Clamps allow each frame to adjust independently. Secures one-inch outer diameter pipe or works well with three-quarter inch (ID) PVC pipe to act as legs. The aluminum frames can be daisy chained and hovered over tables and trays to create a rigid, highly effective, and efficient trellis/SCROG structure. All surfaces are non-porous, washable, and reusable. Single hung, double hung or more, The P SCROG 4×4 is a superior solution to traditional methods. Each leg clamp pack Includes four polypropylene leg clamps and eight stainless steel pan head machine screws and nuts.