Length 400 mm inner diameter 100 mm outer diameter 140 mm

Acoustic pipes 100/400
Sound tube for fresh air ventilator 100 mm, which can conveniently be combined with any of our cover plates. If the hole is through the entire wall, a cover plate is needed on both inside and outside.

Length: 400 mm
Hole-making: 150 mm

Bindex-treated insulation with plastic cover of foil.