The Helios ELFBR 125 G4 consists of replacement filter mats made from synthetic fiber, designed for in-line air filter boxes LFBR. These filters are rated ISO Coarse 70% (G4) and can withstand temperatures up to 100°C. They comply with fire safety standard DIN 53438 F1, are self-extinguishing, and can be regenerated 10 to 15 times. The filters offer a dust holding capacity of 122 g/m² and are supplied in packs of five.