Internorm HF520

• High proportion of glass to frame, allowing more daylight to penetrate
• Inward opening tilt and turn system
• Triple glazed
• Fully concealed locking
• Noise reduction of up to 47dB
• Thermal insulation as low as 0.71 W/(m²K)
• Wide choice of internal timber and finishes
• Large range of external colours and finishes
• Construction depth of 90mm
• 10 year warranty

External

• Wide range of RAL colours
• Range of Hirest (textured) finishes
• Selection of timber effect aluminium

Internal

• Spruce (several finishes)
• Spruce (painted in any solid RAL colour)
• Oak (several finishes)
• Larch

Lead times are typically 8-10 weeks from survey. This can vary depending on time of year and volume. We recommend contacting us as early on as possible in your project to ensure that our current lead times work with your programme.