"Heavy Duty" refers to products or materials designed to withstand significant stress, wear, or load. These items are often used in industrial, construction, or commercial settings where durability is essential. Examples include heavy-duty trucks, tools, and furniture that can support more weight than standard versions. In addition to physical strength, "heavy duty" can also describe the performance of equipment or machinery that operates under demanding conditions. This term is commonly associated with heavy-duty batteries, appliances, and cleaning supplies that are formulated to tackle tough jobs effectively and efficiently.