This is for 2 stainless steel brackets . Please can i ask for a picture of your window sill before purchasing. These simply clip into the gap between a upvc window sill and its frame , see pics. Clip it in , drop it down and it stays fixed in place and is removed by reversing pricess. If you can fit a pound coin in the gap they should fit , please send me a picture first. This listing is for 2 brackets which will hold a plastic trough of no more than 40CM . See my other listings if you need a bigger trough . Happy to answer any questions as these are not for sale anywhere else and are my own design . Please see my feedback you will love this item and it will never rust . Thank you for looking