The KKB damper is designed to automatically cut off the air supply during a fan outage.
PDI/PDT roof base
A flat-roof base is made of a galvanised sheet. Two types of roof bases are available:
- PDI — insulated with is a 10mm insulation (polyurethane foam) inside preventing condensation and
- PDT — silencing, with 50mm insulation (mineral wool).
The collar around the base allows the base to be firmly attached to the roof.
A flat-roof base is made of a galvanised sheet. Two types of roof bases are available:
- PDI — insulated with is a 10mm insulation (polyurethane foam) inside preventing condensation and
- PDT — silencing, with 50mm insulation (mineral wool).
The collar around the base allows the base to be firmly attached to the roof.