Here in Double L we have a wide range of Concrete window sills. The Concrete T-Frame sills 215X140 are made to suit a timber-frame work construction.The window sills are made to order and lead time generally is between 3 and 10 working days depending on the size of the order. If this isn't the right fit for you, please check the rest of are options as we have variety of widths to suits your needs.
A complete drawing of the Concrete Window Sill T-Frame - 215x140 is attached below: