GF911202 Wall of Smoke 3 pack by Gale Force 9 These are perfect for marking various game effects like smoke screens, destroyed vehicles and buildings, magical spell effects or any other obscuring obstacle. The walls can be used individually to represent one 3in long effect or linked together for a massive 9in barrier. Wall of Smoke 3 - Wall of Smoke markers Take control of the battlefield with Gale Force Nines Gaming Aids. Our accessories and markers are laser cut from colorful, durable plastic. Each piece is pre-assembled and ready to deploy to the tabletop right out of the package.