Prima Klima Carbocone K4605-250 is a large activated‑carbon exhaust filter for 250 mm ducting. It uses a patented conical inner basket to improve airflow distribution and carbon saturation, delivering up to 30% higher adsorption efficiency and longer service life than conventional cylinders. The unit is 105 cm long (without flange) with an outer diameter of 41.5 cm, and is rated for a maximum 3000 m³/h. It is filled with approximately 29 kg of CTC65 virgin carbon and includes the K3705 dust prefilter. Intended for odor control on extraction lines in grow rooms or similar spaces, the metal construction and extended flange help ensure a stable, leak‑free connection. It pairs best with 250 mm inline fans operating within the 3000 m³/h rating.