The Model #500 Snow Fence Bracket is cast from solid bronze for lifetime durability. These castings have been carefully engineered to assure maximum strength at the points of greatest stress when under load. Double back brace brackets are standard, and give redundant protection against casting failure when under load. The brackets are available in three angles. The base plate is typically installed along the perimeter of slate roofs with rafters, moderate to high snow falls. It's a custom order and the base plate can be fabricated to any specified size.