This Master Flow 60-inch drive cleat is constructed from durable, corrosion-resistant galvanized steel, making it an essential component for residential and commercial HVAC systems. Specifically engineered to join the left and right sides of standard rectangular duct and stack duct runs, it helps maintain tight, leak-resistant seams that promote consistent airflow and improve overall energy efficiency. The sleeve design allows for easy, straightforward installation by sliding onto the short ends of the ductwork and hammering into place without requiring specialized tools. Featuring a 28-gauge thickness and universal brand compatibility, this contractor-grade duct fitting provides a secure, robust connection. To ensure an airtight and code-compliant installation, all seams should be sealed with approved mastic, sealant, or duct tape after assembly. Please note that this single-pack item is listed in Used-Fair condition, meaning it may exhibit visible surface wear or cosmetic blemishes from previous handling, though it remains functional for structural HVAC duct framing and reinforcement tasks