Formosa Covers 9ft Umbrella Replacement Canopy 8 Ribs in Dark Navy Olefin (Canopy Only) Make sure your umbrella is 8 panels canopy with ribs length 52" to 54" 9ft umbrella replacement canopy for 8 ribs umbrella in Navy Blue Fits 8 ribs umbrella frame. EACH rib must measure 52" to 54" Olefin fabric with UV treated, Very good colorfastness 1200 sun hours Replacement Umbrella CANOPY ONLY.