The Garden Lock wall is sold as a triple unit set that is comprised of the following: Large Unit (14.96 x 4.92 x 8.85 in), Medium Unit (9.84 x 4.92 x 8.85 in), Small Unit (7.48 x 4.92 x 8.85 in). Corner units are sold individually that is 13.46 x 4.92 x 8.85 in. If you need a wedge block to build a circle, yu can use the Garden Wedge Block System. The Garden Wedge Block System is comprised of the following: Wedge Block (8.07(5.31) x 4.92 x 8.85 in) and Wedge Coping (8.23(5.17) x 2.95 x 10.23 in). Please note that the Garden Wedge Block and Garden Wedge Copings are sold individually. Additionally, the Garden Wedge Coping is only available in either Grey Mix or Beige Mix. It is not available in Ultra Black. Garden Lock Coping (15.74 x 2.95 x 10.23 in.) is sold as individual units and is available in Ultra Black. Whether it’s to guard your patio, retain your garden or add a natural touch to your curb line, the Garden Lock is the ideal wall. Versatile in design and modern in appearance, this random wall allows for easy installation with maximum charm.