Working on a high-temperature project like a wood stove, pizza oven, forge, or kiln? This ceramic fiber insulation board is what you need for serious heat protection. This specific piece is 600mm long by 400mm wide by 40mm thick (about 23.6\ x 15.7\ x 1.57\). It's rated for continuous use up to 2100°F (1149°C) and can handle peak temperatures up to 2300°F (1260°C). It's made from refractory ceramic fibers, making it lightweight but with low thermal conductivity, so it's an excellent insulator. It's also got good compressive strength and resists thermal shock. You can cut it to shape with a knife or a saw, and you can drill it if needed. A few important notes: The material is fragile, so handle it carefully. Also, always wear proper safety gear (gloves, mask, goggles) when cutting or handling it to avoid inhaling fibers. It's a versatile material used by DIYers and professionals alike for lining all sorts of high-heat applications.