Recommended for tunnel lengths from 0.9 to 6 m between the roof and ceiling.
The 1.7m long rigid tunnel should be used when greater lengths- in combination with ZTR extension sections- are necessary and to ensure adequate daylight levels are obtained. It is supplied with 2 x 45 degree bends.
Can be extended to distances up to 6 m.
Rigid tunnels has a diameter of either 35 cm or 25 cm.
Super reflective coating along with interior of the tunnel provides a 98% internal reflection rate.
An easy-to-assemble diffuser comes complete with a frosted polycarbonate insulating frame.
Roof module is with 4 mm toughened glass and a removable sash. The glass is with clear and clean coating on the outside.