• Length (Inch): 24"
• Width (Inch): 18"
• Thickness (Inch): 3"
• Grade: A
• Number of Ledges: 0
These plates are made of the highest quality - True Black - Fine Grained - Non-porous - Jewel Hardness - Granite available to give years of long lasting service. Specifications: Compressive Strength 7329 lbs. / sq.in, Water Absorptivity 0.13%. These plates have no ledge.