In addition to the unbeatable quality of our activated carbon (used in all our filters) Prima Klima has also developed a proprietary technique to ensure that all the carbon settles perfectly in the filter. This means that every single cubic centimetre of activated carbon is fully exploited for its intended purpose: air filtration! We use a higher carbon density in our Industry Line carbon filters that is subject to less movement and produces less carbon dust than competitor filters. The Industry Line carbon filter boasts premium quality Prefilters and built-in hanging hooks for easier assembly, especially in horizontally mounted hanging positions. Finally, the Industry Line boasts a longer lifetime than any competitor carbon filterā€”two years!