The ball-top metal garden railing panel is heavy-duty and high-quality. Fits a total post-to-post gap of 1830mm, we already account for the hinge gaps required. The physical width is 1810mm x 490mm high to top of ball finial. Electro-galvanized for added rust resistance and powder-coated black. The galvanizing is not a 100% rustproof guarantee. Like any outdoor metal product, it may need to be painted every couple of years to ensure a long life. Comes with angle brackets and bolts, but no screws. Nuts and bolts must be painted after fitting to prevent the onset of rust. Made from solid metal frames 25mm x 10mm and Infill bars 12mm in diameter. Optional bolt down metal posts available to purchase, Search Wayfair for Lepine Metal Post, for the 50mm square x 500mm high post, available in ball top or flat top.