Fits into the lower rear opening of the telescopic underfloor ventilator to accommodate cavity widths between 50-150mm, or internal walls of more than 100mm thickness, up to a maximum of 200mm.
Fits into the lower rear opening of the telescopic underfloor ventilator to accommodate cavity widths between 50-150mm, or internal walls of more than 100mm thickness, up to a maximum of 200mm.