Tree Grates
The main body of the cover of tree grates is composed of two or four symmetrical panels. The center of the cover is provided with a tree hole, and the hole is surrounded by multiple leaky holes. It is mainly used to protect from the soil erosion and beautify the environment of the trees on both sides of the street.
Tree grilles and grates can be made of a variety of materials, including aluminum alloy, carbon steel, glass fiber reinforced plastic, etc. HY export metal tree grates for sale at a reasonable price, design tree grates you need perfectly!
http://www.hygrating.com/tree-grates.html