Filters are used to clean the supplied and exhaust air in ventilation and air-conditioning systems with a rectangular cross-section. Filters can be used as the first stage of air purification before more effective final filters.
Filter housing made of galvanized steel, filter element made of synthetic fabric in the form of a pocket. The filter can have cleaning classes G4, F5, F7. The filter cartridge (SFK) can be replaced.
| Type | Sizes [mm] | Weight [kg] | ||||||
| B | B1 | B2 | H | H1 | H2 | L | ||
| FBK 400×200 | 400 | 420 | 440 | 200 | 220 | 240 | 500 | 6,2 |
| FBK 500×250 | 500 | 520 | 540 | 250 | 270 | 290 | 600 | 7,8 |
| FBK 500×300 | 500 | 520 | 540 | 300 | 320 | 340 | 600 | 8,3 |
| FBK 600×300 | 600 | 620 | 640 | 300 | 320 | 340 | 600 | 8,9 |
| FBK 600×350 | 600 | 620 | 640 | 350 | 370 | 390 | 600 | 9,5 |
| FBK 700×400 | 700 | 720 | 740 | 400 | 420 | 440 | 720 | 16,2 |
| FBK 800×500 | 800 | 820 | 840 | 500 | 520 | 540 | 800 | 20,4 |
| FBK 900×500 | 900 | 920 | 940 | 500 | 520 | 540 | 800 | 21,7 |
| FBK 1000×500 | 1000 | 1020 | 1040 | 500 | 570 | 540 | 800 | 23,5 |