This replacement filter cassette is designed for use with the Helios KLF 60÷30−35 F7 filter unit. Built on a sturdy support frame, the large-format pocket filter provides high dust retention efficiency. It is made from reusable synthetic fiber, rated as G4 with a tightly consolidated structure of 190 g/m². The filter is self-extinguishing in accordance with DIN 53438 F1 safety standards. It delivers a separation efficiency of 91.3% and a dust holding capacity of 354 g/m², making it an effective and reliable solution for maintaining optimal air filtration performance.