Polyurethane Round Curved Arch Design with Keystone

The P1456D160VID round curved arch with keystone is a premium decorative element that seamlessly blends classic architectural elegance with modern engineering for both interior transitions and exterior facade designs. Featuring a smooth semi-circular curve and a prominent trapezoidal keystone at its apex, it adds depth and structural character to any space. It serves as an aesthetic divider and frame for over-door portals, hallway transitions, or window arch decorations.

With a width of 170 mm, a span (length) of 1980 mm, and a height of 1096 mm, this arch offers ideal proportions for wide transition areas. Manufactured from high-density (150-220 kg/m³) rigid polyurethane, it matches the hardness of wood while remaining exceptionally lightweight. Thanks to its closed-cell structure, it is moisture-resistant, helping prevent rotting or swelling. Its dimensional stability has been tested between -20 °C and +70 °C, and it resists structural deformations like cracking or warping.

The design showcases stepped profile lines along the curve that merge with a sleek central keystone, creating a balanced play of light and shadow. Include the product weight and fixing loads when assessing the substrate and supporting structure. The factory-applied primer prepares the surface for the final coat of paint. However, since paint manufacturers do not guarantee applications without their own primers, applying an additional post-installation primer is optional and at the user's discretion. Polure assumes no responsibility for the performance of the paints used.

The high durability and lightweight advantages of polyurethane make the installation process highly practical. During installation, Polure Polfix adhesive should be applied to the back surfaces and joints, followed by mechanical fastening with screws. For outdoor applications, it must be painted with a UV-resistant exterior paint to prevent yellowing caused by sunlight over time.