Wabash Valley Tree Grate Frames are optional items to be used in conjunction with our Tree Grates. Using these frames will ease the installation process. All frames are coated in a black POWDER-COAT. Choose the SIZE you need: 36", 48", 60" OR 72"; and the SHAPE: Round or Square to match your Tree Grate. You can also choose between a One-Piece or Two-Piece option (two-piece option must be used when the tree already exists - 72" sizes only come in 2 piece options).