Saving Your Time: This sliding gauge for wall panels allows for easier installation and improves accuracy. Compatible with 5/16in thick wall panels, it works with both old and new 5/16in thick fiber cement wall panels. Good Material: This lap sliding gauge wall panel tool is made of durable one-piece tempered high carbon steel and will not damage the surface of pre-coated wall panels. Quick Positioning: This wall panel installation kit is useful throughout the entire wall panel project and can save significant time. Easy Installation: Use this overlap gauge wall panel measuring tool for consistent settings without labeling or adjustment. Ideal for contractors, craftsmen, and DIY enthusiasts. Wide Application: This board mounting gauge is designed specifically for all 5/16in thick wall panels, suitable for full-width fiber cement wall panels, vinyl wall panels, and wood wall panels in sizes 5.25in, 6.25in, 7.25in, 12in, and more. Not suitable for rear wall panel installation.