Great Quality: Designed to work with the shelving system by Amazon Basics. We use only the best, 30 gauge polypropylene to withstand even heavy-duty use. Compatible 18 x 48 size: Our metal shelf liner has been designed for perfect compatibility with AmazonBasics and all 18x48 inch wire shelving systems. The exact measurement for our liners is 17.3 inch x 47 inch. Flat Packed & Sturdy: We deliver perfectly flat packaged plastic wire shelf liners to ensure your sides won't curve upward and they sit perfectly flat once installed. Easy To Clean: Our plastic shelf liners for wire shelving 18 x 48 are easy to clean. Wipe with a damp cloth when needed! The plastic shelf liner is also waterproof to prevent any leakage of water, food or grains between the wire shelves. Elegant Design: Our wire shelf liners 18 x 48 are offered in a variety of semi-translucent, frosted colors to match your interior decor. Match the color to your pantry, garage or utility cupboard.