The CDA ECP92SS 200w 900mm Wide Curved Glass Cooker Extractor Hood can have ducted/ re-circulating installation whilst being able to use 3 speeds with push button control. It has Aluminium grease filters with the option of using a charcoal filter (Not Supplied). There are 2 x 20W halogen bulbs & the extraction noise level is 58d B. The recommended height above gas hobs is 700mm & the recommended height above electric hobs is 600mm.