10-S Tennis Supply is the leading distributor of Har-Tru court surfacing material in the U.S. We stock Har-Tru, Florida Blend, HydroBlend, American Red Clay and Coarse Blend tennis court clay in 80 lb. bags, 50 lb. bags or bulk bags. We also offer calcium chloride and magnesium chloride to keep your courts hydrated in dry conditions. Let us provide you with a free estimate for our tennis court clay for sale, including shipping via a flatbed truck or LTL with liftgate service.