VELUX Low U-value kit ZTB
Low U-value kit ZTB 0K14 2002 lowers the U-value in a standard installation. When fitted, there is no visible difference between a sun tunnel with or without the low U-value kit. The same, discrete interior design is maintained.
Low U-value kit ZTB
- is very easily fitted - together with or after installation of the sun tunnel
- consists of two layers of acrylic glass and a gasket
- is available in size 0K14 only