This 28” BEST medium duty cross brace is a great way to add more support to your artworks. This comes with a bracket set, and BEST cross braces are easy to install for artists of all backgrounds. Easy to work with and made with high quality pine. Pine is a durable sustainable wood that will keep your artwork supported in the long term. These will protect the wood in your artworks from bowing over time. Ecologically friendly and made with a commitment to quality. They are pre-notched so that you can easily install a secondary cross brace without having to notch it yourself.