The 4' x 8' Three Board Raised Planter Bed/Sand Boxes measure 96"L x 48"W x 18" H. Dura-Trel planters are constructed of 100% PVC vinyl. They contain the highest concentration of Titanium Dioxide available. Titanium Dioxide protects against harmful UV rays, guaranteeing your raised bed will never fade, crack, chip or peel. All Dura-Trel planters come with an industry leading 20-year warranty. Made in the USA!