Solar Industries’ alpine oak vinyl board, 6-panel vinyl board or standard vinyl board bi-pass system is the most economical and versatile in our collection. Using the same track as our SM-101 series, changing from a vinyl board option to a mirror door is a snap. The SV-101 series is also an alternative to hollow core bi-pass doors. Our system can be manufactured to fill special size openings, wall to wall and floor to ceiling. This flexibility saves the material and labor of framing and finishing a standard opening.