This shelf is designed to fit over washing machines and dryers with rear ledges, providing convenient storage space for laundry detergents, softeners, and dryer sheets. It can hold a variety of detergent bottles and box sizes, up to 25 lbs, and can be adjusted to level the shelf and brace against the back of the machine. The price drops from $25.99 to just $15.38. Shipping is free for Prime members and nonmembers get free shipping over $35.