The JOHNSON 54 in. Aluminum Drywall Square (Model JTS54HD) is a professional-grade heavy-duty layout tool designed for accurately measuring, marking, and cutting drywall, plywood, OSB, and other sheet goods. Its heat-treated extruded aluminum construction, extra-thick 3/16-inch blade, and permanently riveted head ensure lasting accuracy, making it ideal for high-ceiling drywall installation and demanding construction projects.

• 54-inch heavy-duty aluminum drywall T-square
• Heat-treated 3/16-inch extruded aluminum blade and head for superior durability
• High-strength rivet assembly permanently bonds the head to the blade, maintaining a true 90° angle