Check the listing for details. O/O27 Scale - Rooftop HVAC Ductwork - Scenery Accessories. Color: Gray, Condition: New. Listed at 12.99 USD. DP Model Train Products O/O27 Scale Rooftop Ductwork 5 pcs per pack # 2019- msrp $12.99 All of our products are hand made here in the U.S.A. The color is molded throughout, not just on the surface. Our molds have been constructed with flaws built in to give a more natural look to our products. Made from a non-toxic and virtually odorless urethane casting resin. All of our products can be sanded and painted to suit your application. We recommend lacquers or acrylics, but you may also use enamel paints. If painting, be sure to wash each part thoroughly with warm soapy water and rinse completely. I will combine shipping. Sign up for PayPal; the fast, easy, and secure way to pay online. Be sure to add me to your favorites list! Check out my other items!