Slate Slabs Texture Wall Background. Beautiful Abstract Grunge. Pattern of black slate wall. Square window. background, texture, slate, slab, window, pattern, abstract, surface, rough, construction, textured, brickwall, architecture, facade, masonry, rock, wall, wallpaper, brick, close up, decor, decorate, design, fence, garden, granite, horizontal, house, irregular, material, modern, natural, nature, outdoor, solid, stone, strong, structure, tile, uneven