The TWR rigid Sun Tunnel (tubular skylight) is designed for installation in roofs with pitch 15-60 degrees. The TWR Sun Tunnel has an internal diameter of 350mm. The frame with integrated flashing is made of polyurethane. The sash and diffuser are made of ASA plastic and the rigid tunnel is made of rigid, highly reflective material. All the materials are maintenance-free. TWR Sun Tunnel can be installed within the range from 15° to 60°. Distance from interior ceiling finish to upper edge of battens (measured in the centre of the tunnel): TWR: 0.9 -1.85 m and TWR with extension tunnel ZTR: up to 6 m
For roof pitches of 15-60 degrees.
The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:
B2.3.1(b) - 15 years, 10 year warranty on all VELUX skylights
The product meets the requirements set out in the following documents, or relevant parts of cited standards within the documents:
The product has and can make available the following additional evidence to support the above statements:
Install in accordance with instructions supplied and local building code requirements.