24H shipping Home Flat Filter M5 Iso Coarse 90% 135 x 165 mm MF/FAN M5 ISO Coarse 90% 135x165 mm zł41.39 Flat skeleton filter for recuperator and mechanical ventilation, dimensions 135x165 mm, filtration class M5, Iso Coarse efficiency 90% Economical low cost filter for basic filtration. Coarse pre-filter for air filtration in fan coil units, ventilation and recuperator unit. Add to cart