Production 6 - 10 working days then shipping Home G4 Iso Coarse 60% 225 x 570 mm MF/FAN G4 ISO COARSE 60% 225x570 mm zł42.12 Flat skeleton filter for recuperator and mechanical ventilation, dimensions 225x570 mm, filtration class g4, Iso Coarse efficiency 60% Economical low cost filter for basic filtration. Coarse pre-filter for air filtration in fan coil units, ventilation and recuperator unit. Add to cart