Add a harmonious, warm touch with the Door A 2 Panel 2 Arch Oak Crystal Harmony Blue, fitted by UK Composite Doors. This oak finish with blue crystal harmony detailing brings serene elegance, enhanced by composite strengths: incredible durability to withstand time, top-tier insulation for a snug home, and advanced security for peace of mind. Easy to maintain and refined, it’s a classic, dependable upgrade. Available as a supply only option for self-installers.