Lancia Shower Enclosures. As a standard sign of performance and quality, Lancia Aqua Shield is expertly applied to all shower enclosures in this range. By forming a protective bond with the glass during the manufacturing process, Aqua Shield creates an invisible barrier against lime scale, soap scum and general bacterial build-up. Lancia Aqua Shield also goes to work with environmental and economical savings, as its long-lasting defense against daily grime ensures a noticeable decrease in the ongoing need for bathroom cleaning products.