Thermo-Vu Skylights, Holtsville, N.Y., offers the Cap-1 Prismatic 9-inch insulated-curb skylight. The product consists of two sealed acrylic domes in prismatic design to support a minimum 40-psf live load. It has an aluminum-extruded frame with a PVS inner frame and condensation gutter system. The 9-inch-high aluminum-insulated curb has 1-inch-thick polyisocyanurate structural foam with fiberglass-reinforced facers meeting factory mutual Class 1 and UL Class A approval.