DOMETIC SEITZ S4 Sliding Window 1300 x 600. S4 Sliding Opening Windows Perfect for caravans, motorhomes and horsebox conversions the Dometic Seitz S4 sliding window is easy to install and simple to use. Featuring double glazed panes, the Seitz S4 sliding windows also comes complete with an easy action integrated roller blind and fly. A safety catch provides added security to the window preventing it from being opened from the outside. The Seitz S4 sliding window is quick and easy to install and is available in a range of sizes.