Trademark Games High Density Foam Ring Wall Protector - Dart Board Stabilizer Modular Removable Surround Mat Accessory for Bar, Mancave or Gameroom ADDED STABILITY- Once installed, the ring adds 5 inches of surface area around the dart board. This increases the striking surface and prevents the dart board from shifting to provide hours of consistent and enjoyable play. REVERSIBLE-The high-density rubber foam surround is modular, so it is able to be reversed to prolong the life of the wall protector and preserve the handsomeness of your game room, man cave or pub. UNIVERSAL FIT- The wall protector measures 28.25 from outside edge to outside edge and will fit 18-inch boards for a snug seal that keeps the ring in place without the need for fasteners or adhesives. PROTECT YOUR WALLS AND DARTS- The foam is 1-inch thick to slow dart momentum and prevent damage to drywall and sheetrock. It also prevents dart tips from being damaged from striking cement block walls or repeated strikes to plaster or wood. PRODUCT DETAILS- Materials: High Density Rubber Foam. Dimensions: 28.25 L x 28.25 W x 1 Thick.