These are the practical solar panel dimensions by wattage from solar panels that are actually sold on the market (made by SunPower, Panasonic, QCells, REC Solar, Renogy, Bluetti, and so on). The 16 KW REC400AA Ground Mounted System is perfect for large-scale residential installations. We include optional single-line drawings, detailed permit plan sets. 【SUPERIOR QUALITY】 Anodized Aluminum Z brackets, Stainless Steel Hex Bolts and Screws, service life up to 25 years, perfectly supporting solar panels in off-grid installations. By way of example, we'll go over the materials required. This is an easy-to-assemble kit for ground mounted PV solar array holding 12 panels in a four vertical (landscape) by three across setup at 20 degree tilt. Shipping fees and lead times may apply.