Flexi Ducting Insulated & Nude from $30
Time to check the ducting on you HRV SMARTVENT DVS or other ventilation & Air conditioning systems.
If it is transperant thin or ripped you need to replace it.
Its real easy & will get your ventilation system or Air Conditioning ducted systems running great again.
Ventilation systems like HRV will use nude ducting
Air Conditioning ducting will need to be insulated