Air Filters SYNFASAN® synthetic media filter classes G3 - F5 progressive media structure VERFILTAN® glass fibre media filter classes G1 - G3 Pre-filter cells / Coalescer with synthetic media, Z-line or PORET® filter foam or VERFILTAN® glass fibre media carton, metal and plastic frame or with reusable, exchangeable plastic frame Bag Filters coarse and fine dust filters bags ultrasonic welded or sewn standard media or GT version plastic or metal frame filter classes G3 - G4, F5 - F9 endless foamed sealing on demand