You found a Classic Series demo dome! Nice work. Hope you’re ready to get a great dome at a sweet discounted price. These standard white 20′ diameter domes are limited stock and have been lightly used for temporary projects, trade shows, demonstrations, etc… They are 100% percent structurally sound and still have the same epic durability, extreme weather resistance, and low maintenance design as our brand new Classic Series domes! The only difference is that they may have light scratches, scuffs, and surface inconsistencies on the exterior, which allows us to sell them at this amazing price point. But hurry. The sale ends when we run out!