Brink Sound Dampening Wall Bushing for Sonair 3.0 In Home Ventilation a duct inserted in the

a duct inserted in the hole and a grille fixed on the external wall

The outdoor air cools down nicely at night

Pleated design to capture more particles and last longer

Many fans are only single speed

Easy to clean and maintain

Brink Sound Dampening Wall Bushing for Sonair 3.0 In Home Ventilation a duct inserted in theThe Sonair 3. 0 installation requires the Sonair to be installed on the inside of an external wall. To do so, a hole must first be drilled in the external wall, a duct inserted in the hole and a grille fixed on the external wall. Brink recommends using a special sound dampening duct when installing a Sonair 3. 0 ventilation unit. When using this dampening wall bushing with a diameter of 100 mm, a 102 mm hole must be drilled in the outside wall.