The ceiling-mounted Siemens LF959RB51B cooker hood is designed to be flush-mounted into a ceiling to extract fumes and smells from a hob built-in to an island cooking station. It takes in air around its edges, in the space between the stainless steel filter cover and the frame. Operation This hood has a high extraction rate to clear fumes from 90cm-wide cooktops. It will effectively capture grease, odours and steam through its three metallic grease filter cassettes. A saturation indicator alerts you when they need cleaning - you just unclip the filters and clean them in the dishwasher. Total control It has soft-touch button control and a remote control option for the three-speed fan, which also has a boost setting. This operates intermittently to clear intense fumes, automatically returning to the regular setting after ten minutes. The hood can also be set to run-on for 10 minutes after cooking has finished. Low energy The hood has four low-energy LED lights, with dimmer control, and an A rating for energy efficiency. Air circulation mode This chimney hood can be converted to run in recirculation mode, provided there is an adequate air intake. Air circulation operation also requires an activated carbon filter. Recirculation conversion kits are available.