Sunlight Vinyl Picture Window, or fixed window, is simple and versatile, letting in light, but not the elements. It does not open, has no moving parts and offers excellent insulation and weatherproofing. The standard unit has a single, glazed, grey anti-sun glass which sits in a vinyl frame and offers maximum natural lighting. The simplicity of these windows minimizes obstruction of the view and are often used in combination with sliding, sash, awning, casement and louvered windows