Recommended for tunnel lengths from 0.8 to 6m 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 6m.
Rigid tunnel has a diameter of 35cm
Super reflective coating along the 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 in PVC and an acrylic dome.