City-Hydro PURE Coco Fiber Pads are 5.25x7.5x.25, 8 fit perfect in our Large Green Growing Trays and 4 fit into our Small White Growing Trays. Our pads are made from natural woven coconut fiber and pure tree gum, we use less tree gum in our pads then the majority of the other manufactures of the coco fiber rolls. The City-Hydro PURE Coco Fiber Pads were designed to work with our PURE systems to grow outstanding microgreens. - For the Large Commercial Grower
***  Please see our YouTube Video on City-Hydro Pad Preparation
https://youtu.be/-50EpV5V8R4