Application This product is suitable for mattresses 1.97-7.09in thick. It is suitable for most beds such as single, double, queen, king, or bunk beds. It is ideal for the elderly, disabled people, patients, and pregnant women to provide stable support to protect them during sleep and daily use. It can be used in bedrooms, hospitals, nursing homes, and other places. Specifications Material: Aluminum Alloy, Stainless Steel, Iron, Cloth Process: Baking Paint, Oxidation Color: Silver, White, Black Style: Modern Shape: L-shaped Number of Columns: 5 Assembly Required: Yes Mounting Type: Bedside Mount Applicable Mattress Thickness: 5-18cm/1.97-7.09in Package Included 1* Bed Rail All Accessories for Assembly.