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    FLEXIT filters

    FLEXIT SPIRIT UNI 2 FLEXIT SPIRIT UNI 2
    FLEXIT SPIRIT UNI 3 FLEXIT SPIRIT UNI 3
    FLEXIT SPIRIT UNI 4 FLEXIT SPIRIT UNI 4
    FLEXIT SPIRIT K2 / K2.1 (RER/REL) FLEXIT SPIRIT K2 / K2.1 (RER/REL)
    FLEXIT NORDIC KS3 FLEXIT NORDIC KS3
    FLEXIT NORDIC S2/S3 FLEXIT NORDIC S2/S3
    FLEXIT NORDIC S4 FLEXIT NORDIC S4
    FLEXIT NORDIC S7 SW FLEXIT NORDIC S7 SW
    FLEXIT NORDIC CL2 / CL3 / CL4 FLEXIT NORDIC CL2 / CL3 / CL4
    FLEXIT NORDIC L6 SW FLEXIT NORDIC L6 SW
    FLEXIT ECONORDIC WH4/W4 FLEXIT ECONORDIC WH4/W4
    FLEXIT C2 / C2R FLEXIT C2 / C2R
    FLEXIT S3R / K3R FLEXIT S3R / K3R
    FLEXIT L4/VG400, S4X/L4X, S4 W/TT FLEXIT L4/VG400, S4X/L4X, S4 W/TT
    FLEXIT S3X TT, K3X TT, A3 FLEXIT S3X TT, K3X TT, A3
    FLEXIT S4R/S6R/S7R FLEXIT S4R/S6R/S7R
    FLEXIT SL4R FLEXIT SL4R
    FLEXIT L7X/S7X, VG700 FLEXIT L7X/S7X, VG700
    FLEXIT / ILTOFLEX 400 FLEXIT / ILTOFLEX 400
    FLEXIT L12X, LX18, LX20, LX30, LX50 FLEXIT L12X, LX18, LX20, LX30, LX50
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    Items 49-100 of 52

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    Category
    1. FLEXIT SPIRIT UNI 2 3items
    2. FLEXIT SPIRIT UNI 3 3items
    3. FLEXIT SPIRIT UNI 4 3items
    4. FLEXIT SPIRIT K2 / K2.1 (RER/REL) 3items
    5. FLEXIT NORDIC KS3 3items
    6. FLEXIT NORDIC S2/S3 3items
    7. FLEXIT NORDIC S4 3items
    8. FLEXIT NORDIC S7 SW 3items
    9. FLEXIT NORDIC CL2 / CL3 / CL4 3items
    10. FLEXIT NORDIC L6 SW 3items
    11. FLEXIT ECONORDIC WH4/W4 3items
    12. FLEXIT C2 / C2R 3items
    13. FLEXIT S3R / K3R 1 item
    14. FLEXIT L4/VG400, S4X/L4X, S4 W/TT 2items
    15. FLEXIT S3X TT, K3X TT, A3 2items
    16. FLEXIT S4R/S6R/S7R 2items
    17. FLEXIT SL4R 3items
    18. FLEXIT L7X/S7X, VG700 2items
    19. FLEXIT / ILTOFLEX 400 1 item
    20. FLEXIT L12X, LX18, LX20, LX30, LX50 3items
    Size of filter ( LxHxD mm)
    1. 333x113x130 3items
    2. 419x192x31 3items
    3. 459x207x31 3items
    4. 292x226x48 3items
    5. 288x234x48 3items
    6. 335x130x50 3items
    7. 283x127x50 1 item
    8. 272x166x48 3items
    9. 468x200x70 2items
    10. 468x200 1 item
    11. 365x247x31 3items
    12. 257x220x315/120/3 1 item
    13. 257x220x48 2items
    14. 257x220x20 2items
    15. 257x220 2items
    16. 255x130x48 2items
    17. 255x130x20 2items
    18. 255x130 2items
    19. 394x223x250-100/5 2items
    20. 394x223x20 2items
    21. 350x185x50 3items
    22. 540x354x420/260/8 1 item
    23. 813x548x300/12 1 item
    24. 592x490x550/8 1 item
    25. 275x132x96 3items
    26. 300x269x96 3items
    27. 460x218x96 3items
    28. 270x242x95 3items
    Original/Replacement
    1. Original filter 17items
    2. Replacement filter 35items
    VOC / and Odor Reduction
    1. Yes — Carbon Filter 13items
    2. No 39items
    Compatible with Models:
    1. SPIRIT UNI 2 3items
    2. SPIRIT UNI 3 3items
    3. SPIRIT UNI 4 3items
    4. C 2 3items
    5. NORDIC CL 2 3items
    6. NORDIC CL 3 3items
    7. NORDIC CL 4 3items
    8. SPIRIT K2 R 3items
    9. S3 R 1 item
    10. NORDIC S2 3items
    11. NORDIC S3 3items
    12. NORDIC S4 3items
    13. S4R 2items
    14. S6R 2items
    15. S7R 2items
    16. ILTOFLEX 400 1 item
    17. L4/VG400 2items
    18. S4X/L4X 2items
    19. S4/W TT 2items
    20. S3X TT 2items
    21. K3X TT 2items
    22. A3 2items
    23. L7X / S7X 2items
    24. VG700 2items
    25. SL4R 3items
    26. EcoNORDIC 3items
    27. L12X 1 item
    28. VG/VGL 1200 ALBATROS 1 item
    29. L18X 1 item
    30. L20X 1 item
    31. L30X 1 item
    32. L50X 1 item
    33. NORDIC S7 3items
    34. NORDIC L6 3items
    35. NORDIC KS3 3items

    News & Blog

    • SAVE VTR 250 Filter Replacement – Can You Do It Yourself?
      Posted: September 24, 2026
      Categories: News
      SAVE VTR 250 Filter Replacement – Can You Do It Yourself?

      A short DIY guide to replacing filters in the Systemair SAVE VTR 250 ventilation unit. Learn which replacement filter kits to choose (STD, Carbon, Nanowave, OPT F8) and how to replace the filters step by step to maintain high air quality and system efficiency.

      Read more »
    • ACETEC filters
      Posted: September 03, 2026
      Categories: Blog
      ACETEC filters

      New ACETEC EvoAir Ventilation Filters at FILTERS24

      FILTERS24 is pleased to introduce a new range of high-quality compatible replacement filters for ACETEC EvoAir ventilation systems. The filters are manufactured to match the dimensions of the original filters, ensuring a precise fit and reliable ventilation performance.

      ACETEC Filter Sets

      Customers can choose between two filter options:

      • Standard filter set: 2 × F7 / ePM1 55% filters for supply and exhaust air.
      • Carbon filter set: 1 × F7 Carbon filter for incoming air and 1 × F7 / ePM1 55% filter for exhaust air. The activated-carbon filter helps reduce unpleasant odors, traffic pollution, smoke and selected volatile organic compounds (VOCs).

      Compatible ACETEC EvoAir Models

      The filters are suitable for a wide range of ACETEC EvoAir ventilation systems, including:

      • EvoAir A100S / A110T
      • EvoAir A200S / A170T
      • EvoAir A250S / A400S / A230T / A390T
      • EvoAir A30T / A70T
      • EvoAir A50CS
      • EvoAir A50S
      • EvoAir A590 / A600 / A890 / A900
      • EvoAir A60T G1
      • EvoAir
      Read more »
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