Corbels for Pre-Installed Countertops - Paint Grade Cove 12 Need expert countertop support advice? Call or text Tyler 970-690-0503. Sold individually. For installation overview, please browse our product photos. We intend for you to paint them because they may contain discolorations and filled knot holes. The "L" portion is always maple, but the brace portion may be maple, poplar or alder. They are unfinished, but perfectly sanded and are rated at 250lbs when properly mounted and loaded uniformly. Designed/built/sold from our 3-person shop in Fort Collins, Colorado.