FilmTec™ XLE PRO-4040 Elements offer better system performance and economics for small commercial systems by operating at very low applied pressure. FilmTec™ XLE PRO-4040 elements are tape-wrapped. In addition to high-quality water and low energy costs, FilmTec™ membranes also deliver savings by providing long-lasting and reliable performance. For added convenience, the elements are available in a dry state for rapid start-up.