SearchAsk us anythingarrow rightWhat is a 4060 window?A 4060 window is a very versatile vinyl window. This window can be used in new construction and replacement window settings.Let's Get It Fixed!Our virtual experts can diagnose your issue (for free!) and resolve simple problems.Chat with a live expertChat nowCall 1 (855) 466-3948Call nowRATESHARECopy linkTwitterFacebookmagnifying glassLink copied to clipboard.SUBMIT AN ANSWERShop Recommended ProductsShop HomeX Recommended ProductsRELATED QUESTIONSWhat is a half round window called?A lunette is the space between the arch above the door and the wall. Is that correct? The spaces are not empty. When the space is used as a window, it's called a lunette.What are hidden tab top curtains?Hidden tab curtains, also called back tab curtains, have tabs sewn onto the back of the curtain. Neither is visible from the front because the rod slips through the tab. This creates an elegant, clean line by giving the illusion of the curtain floating in space.Whats a French window?A window is defined as a French one. A pair of casement windows that reach to the floor are placed in an exterior wall.What is a window sub sill?Sub- Sill. The primary purpose of the supplemental member of the frame is to hold multiple units together at the sill.What is a window wall slide out air conditioner?The slide-out air conditioners have a single unit, the sleeve. The back of the air conditioner has vent units. The air conditioners come with no sleeves. The sleeves only vent through the back of the air conditioner.Why is it called a window?Etymology is about how things work. The English language-word window comes from the Old Norse 'vindauga', which means wind eye. Fenestration refers to the arrangement of windows within a faade, as well as defenestration, which is throwing something out of a window.