The 5/16 in. Hardie Siding Gauge is designed for use with 5/16 in. fiber cement siding, including James Hardie's updated HZ5 series. Each gauge is adjustable at 1/4 in. increments for siding reveals from 4 to 8 in. The patented friction-cam mechanism supports full 12 ft. lengths of fiber cement siding, ensuring efficient one-person installation without layout time. Made from heavy-gauge plastic, it will not scratch or mar pre-painted siding.

• Supports one-person installation with virtually no layout time
• Heavy-gauge plastic won't scratch or mar pre-painted siding
• Durable plastic construction for long-lasting use
• Designed specifically for 5/16 in. Hardie siding installation
• Ensures accurate gauge measurements for precise siding alignment