Replacement of Activated Carbon filter : You should use 2 carbon filters on the products In order to put the carbon filter in place, the channels on the motor cover should be brought to alignment with the lugs on the filter and rotate it half turn clockwise. To remove it, you should rotate it anticlockwise by half turn. Carbon filters need changing every 6 months to maintain their performance Image for illustration purposes. Size: 140mm x 32mm Package Size: 150 x 60 x 150 mm Suitable for the following hoods: * CH500P-BL 50cm Integrated Cooker Hood * H501P-WH 50cm Cooker Hood - Single Glass * H501P-BL 50cm Cooker Hood - Single Glass * H601T-WH 60cm Cooker Hood - Single Glass * H601T-BL 60cm Cooker Hood - Single Glass * H602T-BL 60cm Cooker Hood - Double Glass * PH500-PBL 50cm Pyramid Hood * PH500-PWH 50cm Pyramid Hood * PH600-PBL 60cm Pyramid Hood * PH600-PWH 60cm Pyramid Hood