NEW - SMOG duct filter box in Alnor's offer:
- the filtration efficiency of PM2.5 particles reaches up to 73%, and PM10 particles up to 81%,
- the filter box consists of an airtight galvanised box and two filters: prefilter and smog filter,
- casing tightness is ensured with EPDM gasket,
- a perfect solution for domestic ventilation and heat recovery systems.