The biggest strong thickness readily available is 6". When Anyone bit of foam is ordered in a higher thickness than that, It will probably be glued along with A different piece. Nearly eight" thickness, there won't be any added gluing rates. For thicknesses higher than 8", yet another gluing charge http://buy-window-shades-online53840.blogprodesign.com/14078184/considerations-to-know-about-furniture-upholstery