VELUX light tunnel TLR
VELUX light tunnel TLR is designed for sloping roofs with a flat surface, fixed pipe. The recommended length of the tunnels is 0.9 – 6 m between the roof and the ceiling. A 1.7 m long solid tunnel should be used if longer sections are required – in combination with ZTR extension sections – to ensure an adequate level of daylight. It is equipped with 2 x 45 degree bends. It can be extended up to 6 m in length.
The diameter of rigid tunnels is 35 cm, or 25 cm. The excellent reflective coating on the inside of the tunnel ensures an internal reflectance of 98%. The easy-to-mount diffuser is supplied with a matte polycarbonate insulation frame. The roof dome has 4 mm tempered glass and a removable sash. The glass has a Clear & clean coating on the outside.