Thank you for viewing. This is a stainless steel dishwasher stand. The frame may be steel, but the details are unknown. I am selling it because I got rid of my dishwasher. Even without a dishwasher, it's convenient to use it in two tiers, such as placing a washbasin on it. It has a sliding drainboard (with a drip tray) underneath. At my house, I used it on the countertop next to the sink, instead of spanning it over the sink itself. It is not expandable. Size: Width 53cm x Depth 31.5cm x Height 20.5cm. Since these are amateur measurements, please comment if you would like to know more detailed sizes of specific parts. It has been used, so there is some dirt and signs of use. Thank you.