Products certification Certificates SlimKo Plus boilers - ecodesign and Class 5 certificates SlimKo Plus boilers - ecodesign and Class 5 certificates SlimKo Plus 12 kW – 5 CLASS SlimKo Plus 16 kW – 5 CLASS SlimKo Plus 20 kW – 5 CLASS SlimKo Plus 25 kW – 5 CLASS SlimKo Plus 30 kW – 5 CLASS SlimKo Plus 12 kW – ECODESIGN SlimKo Plus 16 kW – ECODESIGN SlimKo Plus 20 kW – ECODESIGN SlimKo Plus 25 kW – ECODESIGN SlimKo Plus 30 kW – ECODESIGN SlimKo boilers - ecodesign and Class 5 certificates SlimKo boilers - ecodesign and Class 5 certificates SlimKo 12 kW – 5 CLASS SlimKo 16 kW – 5 CLASS SlimKo 20 kW – 5 CLASS SlimKo 24 kW – 5 CLASS SlimKo 30 kW – 5 CLASS SlimKo 12 kW – ECODESIGN SlimKo 16 kW – ECODESIGN SlimKo 20 kW – ECODESIGN SlimKo 24 kW – ECODESIGN SlimKo 30 kW – ECODESIGN SlimKo MAX boilers - ecodesign and Class 5 certificates SlimKo MAX boilers - ecodesign and Class 5 certificates SlimKo MAX 70-300 kW – 5 CLASS SlimKo MAX 70 kW – ECODESIGN SlimKo MAX 90 kW – ECODESIGN SlimKo MAX 120 kW – ECODESIGN SlimKo MAX 150 kW – ECODESIGN SlimKo MAX 300 kW – ECODESIGN DuoKo boilers - ecodesign and Class 5 certificates DuoKo boilers - ecodesign and Class 5 certificates DUOKO VERSION PELLET DuoKo 15 i 24 kW – 5 CLASS DuoKo 34 i 45 kW – 5 CLASS DuoKo 15 kW – ECODESIGN DuoKo 24 kW – ECODESIGN DuoKo 34 kW – ECODESIGN DuoKo 45 kW – ECODESIGN DUOKO VERSION EKOGROSZEK DuoKo 15 i 24 kW – 5 CLASS DuoKo 34 i 45 kW – 5 CLASS DuoKo 15 kW – ECODESIGN DuoKo 24 kW – ECODESIGN DuoKo 34 kW – ECODESIGN DuoKo 45 kW – ECODESIGN