The Architectural Series is an aluminum ground-set, external halyard flagpole. Sizes up to 35 ft. are shipped as one-piece poles. Sizes above 35 ft. are shipped in sections and fitted with a self-aligning sleeve which requires no field welding. Available in standard satin finish, however we also offer clear, bronze and black anodized finish at additional cost. While all of our aluminum flagpoles require little maintenance to retain their natural shine, our anodized flagpoles offer an even simpler solution. Our satin brushed finished flagpoles will generally keep clean with the rainfall in most areas, however; because the exterior of the flagpole is aluminum, it will continue to oxidize throughout its lifetime. Special cleaning agents may be required to remove the discoloration caused by this process of oxidation. Our anodized flagpoles do not encounter this problem. The process of anodization actually creates a barrier on the external surface of the aluminum flagpole, thus eliminating the oxidation process. Because the aluminum is not exposed to the elements, it cannot oxidize. The anodized finishes allow you to clean your flagpole with simple soap and water. For this reason, we recommend the purchase of an anodized finish on all of our flagpoles. Anodized aluminum poles take maximum time to ship because they are made to order. Available in 4 finishes, Includes all accessories, External halyard SKU CPEC20S,Flagpole Type Commercial,Flagpole Size 20ft, Flag Size 3ft x 5ft, Exposed Height 20ft, Overall Height 23ft, Butt Diameter 5in, Top Diameter 3in, Flagpole Wall Thickness .188in, Unflagged Windspeed 315 mph, Flagged Windspeed 120 mph, Flagpole Features External Halyard, Revolving Truck, Brand Eder, Manufacturer Part Number EC20S.