The DV145 Adroit attic roof penetration plate is an accessory for the DV145 Adroit heat recovery ventilation unit.. When the vapour barrier of the building enclosure is penetrated by ventilation ducts, the penetrations must be sealed to keep the indoor air humidity out of the insulation layers.

The penetration plate provides a convenient way of sealing. The plate helps to prevent water ingress, air leakage and thermal bridging in the attic space. It also reduces the noise and vibration from the ventilation unit.