Someone must be responsible for installing broken aluminum doors and windows. This installer has several situations: first, you buy their brand of broken bridge aluminum doors and windows in the store, including installation, which is equivalent to free; Second, although you bought the broken aluminum doors and windows in the store, you can also have professionals to install them, but they are extra. You need to ask clearly when you buy them and talk about the installation fee. Third, you buy it online, and a dealer will contact you later to confirm the installation. Installation is basically not included, and a fee is required. Should be analyzed on a case-by-case basis.