TWI 26 soluble salt tile, 60x60 CM, with a polished finish and a marble look. The square face is a creamy off-white scattered with fine light grey speckles, giving an even, quiet pattern across the tile. TWI 26 comes in the 60x60 CM size. Specs that matter for choosing: water absorption < 0.05% (ISO-10545-3), breaking strength > 1700 N (ISO-10545-4), modulus of rupture > 40 N/mm2 (ISO-10545-4), surface abrasion resistance Class PEI 4 (EN 154), glossiness > 90% (Gloss meter 60°), stain resistance Class 5 (ISO-10545-14), Mohs scratch hardness 5 (EN 101) and reaction to fire Class A1 - A1 fl.