The Geber LINEA 25 D is a premium modular radiator featuring double vertical parallel round tubes (diameter 25 mm) arranged in pairs for maximum thermal capacity. Sophisticated contemporary design with unlimited width customization while maintaining consistent height. Welded onto round collectors (diameter 35 mm) with epoxy powder coating finish.

Maximum Thermal Performance: Double Ø25 mm tube configuration delivers exceptional heat output with refined spacing and professional aesthetics. Fully modular construction. Available in all standard RAL colors and custom finishes. Perfect for contemporary interiors demanding flexible, design-driven heating solutions with maximum efficiency and thermal capacity.

• Maximum Tube Diameter: Premium Double Ø25 mm delivers the highest thermal output in the LINEA series. Each pair is an independent element for maximum flexibility.
• Thermal Output Per Pair: Values shown are for a double Ø25 mm vertical pair at ΔT=50°C (water at 75°C, ambient at 20°C). Total output = number of pairs × output per pair.
• Double Tube Advantage: Superior thermal capacity with exceptional heat transfer efficiency. Each pair delivers approximately 39% more heat than single LINEA 25 S tubes for maximum comfort.
• Fully Modular Design: Order any number of pairs to achieve desired width. Minimum 2 pairs recommended. Professional round collectors Ø35 mm for excellent structural performance.
• Pressure/Temperature: Max operating pressure: 8 bar · Test pressure: 12 bar · Max temperature: 95 °C
• Finishes: Epoxy powder coating. Standard colors: White RAL 9010 and all RAL/NCS options. Custom finishes available upon request.
• Availability: Heights from 400 mm to 2400 mm. Widths customizable from 2 pairs (80 mm) to any maximum width required. Supreme performance double tube configuration.