Wagner Square Dark Wash Ribbed Plant Caddy is made from sustainably-harvested pine. Stained finish features color protective coating to resist fading grooved non-slip surface prevents pots from slipping. Twin wheel smooth-rolling casters glide easily over carpets and floors without marring or tipping great for laminate wood or tile floors. Load capacity of up to 220 lbs 11.” square surface indoor use only. The Wagner company located in southern Germany near the Black Forest has earned a reputation for exceptional quality. With over 40 years experience in design and manufacturing their products are rigorously tested for safety and durability.