3003 H18 Household Aluminum Foil is a specific type of aluminum foil commonly used in household applications. Here's what you need to know:

1. Alloy: 3003 is an aluminum alloy with excellent corrosion resistance and moderate strength. It's often used for its combination of formability, weldability, and durability.
2. Temper: H18 is a temper designation for aluminum. It indicates that the aluminum foil has been strain-hardened and stabilized, ensuring it retains its shape and properties during use. 
3. Household Use: 3003 H18 aluminum foil is widely used in households for various purposes, including wrapping food, covering dishes, lining baking pans, and storing leftovers. It provides a barrier against moisture, light, and odors, helping to preserve the freshness and flavor of food.
4. Properties: This aluminum foil is typically thin and flexible, allowing it to easily wrap around food items. It has good heat conductivity, allowing for effective cooking and baking. Moreover, it is resistant to punctures and tearing, adding to its durability.
5. Safety: When using aluminum foil for cooking, it's important to follow safe practices such as avoiding contact with acidic or salty foods for prolonged periods and preventing direct contact with open flames. Remember to check the specific dimensions and thickness you require as they may vary depending on the manufacturer. It's always advisable to consult product packaging or supplier information for precise details.