Nuvo Iron 4.5″ x 4.5″ Black Pyramid Ornamental Aluminium Post Cap – Black (Nominal 5″ x 5″) For 4 1/2″ x 4 1/2″ Posts  Find the perfect fence post cap or deck post cap for your project. This 4.5″ x 4.5″ black pyramid ornamental aluminium post cap adds a one-of-a-kind touch to your