When you buy windows, are you just buying the insert? Or everything that goes around it too?
Insert windows install directly into the existing frame of the window being replaced, allowing you to get the latest window performance features while minimizing disruption to your home. Insert windows preserve the original frame, exterior trim, exterior siding and interior casing.
The window usually comes as one unit which include the mounting frame, but not the flashing that goes around it. But there is no hard and fast rule and you can find minor variations to this.
A little research goes a long way.
A window insert is a new dual pane piece of glass, usually ordered to go back into existing frames. A retrofit window is a new (usually vinyl) window that installs inside your old window opening, covering up the thin frame of the old window without compromising the waterproof integrity of the original window frame to the house.
When you buy windows, you are generally buying the whole window which includes the window sash and frame. The difference between windows is if it is a new construction or a replacement window. The new construction window generally has a nailing flange for installation and the replacement window gets inserted into the existing window frame after the old sashes are removed. This is just a basic reference on the type of windows out there.
Insert windows preserve the original frame. By installing the new window directly into the existing frame of the old window you want to replace, it allows you to get the latest window performance features while minimizing disruption your home.