ZTR 0062, 620 mm, ZTR 0124, 1240 mm, extension sections for rigid tunnel
- Commercial DescriptionExtension section ZTR is used to extend rigid sun tunnel TWR when the distance from roof to interior ceiling level exceeds 1.70 m. The rigid tunnel can be extended with sections of ZTR up to a maximum of 6.0 m. Available in lengths of 620 mm/1240 mm.