Features: 1.Parameter: The window size is 470x210mm, the installation cut out size is 405x150mm, and the installation thickness is 10?40mm. 2.Oval Window: The oval shape design allows more light to enter the cabin, increases the brightness of the cabin, and can be used for ventilation windows. 3.Stronger: Sturdy ABS, stainless steel, molded design and thick tempered glass for maximum durability. With anti aging, impact and corrosion resistant features. 4.Unique Design: Fully sealed and waterproof, equipped with locking fixing handles, insect repellent mesh and sturdy outer frame, effectively prevent rainwater from entering. 5.Opening Angle: Square design, with switch lock handle and support rod, 0?180 degrees adjusted, convenient to enjoy the scenery along the way. Specification: Item Type: Oval Opening Portlight Window_x000D_ Material: Stainless steel + tempered glass + ABS_x000D_ _x000D_ Window Dimensions: Approx. 470x210mm/18.50x8.27in_x000D_ _x000D_ Installation Cut Out Size: Approx. 405x150mm/15.94x5.91in_x000D_ Suitable Thickness: 10?40mm/0.39-1.57in_x000D_ Application: _x000D_ Applicable for Boat, Yacht, Ship, RV_x000D_ Installation Instructions: The window is inward opening, the fixed frame is installed outside the cabin, and the glass surface is the inside surface of the cabin Note: Installation is slightly more difficult, it is recommended to find a professional engineer to assist in installation