KEY DETAILS The edge of the porcelain is solid in color. The porcelain is backed with an aluminum plate for additional durability. While porcelain is very durable under most circumstances, severe edge impact can cause chipping. Rustproof metal base. The base features a high-performance powder coat for added resistance to staining and abrasion. Base has adjustable levelers to adapt to varying floor levels. This contract-grade item is manufactured to meet the demands of commercial use in addition to residential. See more . Top made in China; Base made in Vietnam. How to measure for delivery