Protect your walls from errant dart throws with the Viper Guardian Dartboard Surround. This EVA Foam dart board surround will work with any regulation-sized 17.75” steel tip dart board and no tools are needed to set it up. Simply mount the Guardian Dartboard Surround to your favorite sisal dartboard and you'll add 2.7 square feet of protection around your dartboard. This is great for games and practice that involve the outer segments of the dartboard. You'll be able to throw knowing that even if you miss, your walls will be safe.