The enclosure is made from brushed stainless steel. Keep it dry and clean and use a steel care product (oil) to protect it from flash rust. Avoid excessive humidity, store in a dry place. The side panels are made from oak wood which has been sealed with a formula of natural wax and oil. Four rubber feet give it a firm stand. Be careful, the rubber might leave marks on the underground. The LED are surface mount, please avoid manual force on them or they might chip off.