Outer diffuser obtained from weaves of colored PVC tubes or thermo-formed engineering compounds with stainless steel internal frame. Gray/orange, gray/blue or gray/white PVC finish. Inner diffuser in injection-molded translucent polycarbonate. "Galvanized" structural parts (base support, diffuser support, arms, brackets, levers and braces) for enhanced weather resistance. Gray painted body. Springs and main mechanical components also in special materials for good weather resistance.