Bathroom Cladding 5mm Black Diamond Stone Wall Panels & Ceiling Panels AKA Black Sparkle. Tongue and Grooved Ideal for your bath/shower walls going over tiles and on your ceiling 100% waterproof :
Chevron Tile Bathroom Cladding Panels - Bathroom Cladding Direct
Dark Grey Small Tile 5mm Bathroom Cladding Wet Wall Panels | Cladding World