Nope, these aren't stylish copper pendants, but cooker hoods! This sleek new design is the Ceramica by Caple and is the only cooker hood in the UK to have a ceramic, handmade body. The filter is stainless steel and the hood is finished in a soft copper – the material of the moment.
Onapplianceparts Universal Cooker Hood Filters with Grease Saturation Indicator,470 x 970 mm Pack of 2 No description (Barcode EAN = 5053429000026). http://www.comparestoreprices.co.uk/december-2016-week-1/onapplianceparts-universal-cooker-hood-filters-with-grease-saturation-indicator-470-x-970-mm-pack-of-2.asp
Mark’s “How-To” on cleaning greasy oven vent filters is simple. Haul out your biggest pot, fill it with water and bring it to a boil. Then add 1/2 cup of BAKING SODA….VERY SLOWLY! Literally, you have to add it about a tablespoon at a time because it IMMEDIATELY fizzes up quite alarmingly! (The fizz goes right away.) Then take your caked-with-grease filter and submerge it in the pot. (Well, 1/2 of it anyway.)