Parts of a Window

Frame

The stationary portion of a window that surrounds either the glass (direct glaze) or the sash (operating or stationary). There are three components to the frame: the header across the top, the jambs down each side, and the sill across the bottom.

Low E Glass

E stands for emissivity, which is a material’s ability to radiate energy. The number following the “E” indicate the number of metallic layers. Marvin Replacement windows and doors have four choices of Low E coatings. The coatings are thin metallic layers designed to reflect heat.

Divided Lites

Divided lites are an option to replicate historical window designs. Windows used to have separate pieces of glass glazed between muntin bars. Marvin Replacement offers Simulated Divided Lites (SDLs) and Grills Between the Glass (GBGs). SDLs get permanently adhered to the outside surface of the glass to give the appearance of divided lites. GBGs appear in between the glass panes for easier cleaning.

Sill

The lower, horizontal piece of a window or exterior door frame that supports the frame.

Sash

The operating and/or stationary portion of the window that holds the glass and is separate from the frame.