All play structures are made from redwood lumber, construction heart grade or better, grinded smooth and then stained completely inside and out with non-toxic, tung oil stains and finished with clear tung oil as a top coat (unless otherwise specified). Prices do not include Delivery & Installation charges. For options and a quote on Delivery & Installation, please call or email, specifying your zip code and our product code. Pricing and availability subject to change without notice.