The Proper Stopper™
The highest grade of filtration for your MVHR Heat Recovery system.
Ideal for high pollution areas where traffic particulate is a concern and those who have high sensitivity to particles in the air and who are concerned with indoor air quality inside their home. (blue for extract, pink for supply air)
Complete cover filtration usually an 'add on' filter option to be installed within the ducting network
Very fine dust, combustion particles, bacteria, viruses and smaller spores.
ISO ePM1 55% (ISO 16890)
Grade F7 Filtration (EN779 2012)