The Dynaco D-310 LF (Low Friction) is designed for inside applications. It is a perfect, entry level solution for applications targeting 25.000 cycles per year. As all Dynaco doors, the D-310 LF requires little space. It protects your installation against drafts, humidity, dust and dirt. With its speed and good seal, the D-310 LF improves your traffic flow and increases employee comfort. A Dynaco D-310 LF door also assures significant savings on energy costs.