Explore Joseph Brewer’s board “Exterior Corbels” on Pinterest. See more ideas about Woodworking, Carpentry and Porch brackets. Discover ideas about Corbels Exterior. July 2019. Polyurethane Corbels, pg 9 – Polyurethane Corbels can be installed horizontally or vertically. or order a small . Wood Corbels · Urethane Corbels · Resin Corbels · Metal Corbels · Iron Brackets