Hammerstone Grey Porcelain Paving Slabs 900x600x20mm From £20.09/m2Hammerstone Grey Porcelain Paving 900 x 600 is a stylish and versatile option for outdoor patio gardens, delivering a contemporary, relaxed, and visually striking environment for your contemporary or traditional property. As a popular choice in the UK, these 20mm outdoor porcelain tiles feature a captivating hammerstone grey colour that adds allure to your outdoor area. With generous dimensions of 900 x 600, these tiles create a sense of spaciousness