The unit is the quickest cleanroom to install on the market today! The rooms are expandable by 4 foot increments. Lengths are established by the number of panels that you connect, panel sizes are 4 foot wide. Standard roof panel sizes are 4′, 8′, 12′ by 4′ wide. Panels are made from anodized aluminum frames with sealed in acrylic panels, frame material is strong 6063-T6 Aluminum with Protective Anodized Coating. Latching system makes it virtually effortless to attach panels together, roof panels offer the option for HEPA filters openings or drop in light fixture. Light weight design makes assembly easy. Build any length of cleanroom when stating with our standard widths. Windows panels are durable Clear 1/8″ Plexiglass. We can also offer as an option a hard wall panel as shown in photo, PVC, anti-static, Lexan, or colored plexiglass on request.