Real Professional Drywall Mud Pans with Extra Strength and Comfort. Sheetrock Tools Professional Drywall Tools Matrix Mud Pans have a contoured bottom for easy mixing and added comfort. The top of the pan is reinforced with a steel band that adds rigidity and durability. Clean, continuous hel-arc welds make clean-up fast and easy. You should expect more out of a mud pan - Expect the MATRIX.