Is there a Glossary of Terms available?

Combination Window - A wood or clad wood frame storm sash with self-storing screen. Bottom glass panels such as those installed on a double hung unit operate by moving the plungers in and sliding the glass panel up to the desired position. Side glass panels such as those installed on gliders slide to the left or right to the desired position. All inserts are removable from the inside.

Cottage Window - A window with unequal sash, top and bottom.

Daylight Opening (DLO) - The width and the height of the visible glass.

Depth of the Jamb - The point where the exterior casing ends to the point where the interior casing begins. On clad units, the point from the backside of the nailing fin to the interior of the frame.

Direct Glaze - Refers to a window with no sash. The glass is glazed directly into the frame and is stationary.

Divided Lites - Division of light by the use of muntin bars.; Muntins: The actual bars that create a pattern in the window. Authentic Divided Lites (ADLs): Single or insulating glass, individually glazed between the muntin bars.; Simulated Divided Lites (SDLs): Muntins permanently adhered to the interior and exterior of the glass; Grilles: Wood Muntins fastened to the interior of the sash to create the effect of divided lites, removable for easy glass cleaning.
Spacer Bar: Tiny aluminum bars inserted between SDL muntins to emulate ADL.
Grilles Between Glass (GBG's): Aluminum flat or contour bars divide the glass visually. Because the grille is between the glass, grilles do not become misplaced or damaged. Cleaning is easy without small panes of individual lites.
 

Double Hung - Double hung windows have two movable sash which operate vertically. Double hung sash are held in an open position with the use of coil spring block and tackle balancing devices.

Double Hung Tilt Pac - A specially designed, made-to-order, package which includes everything needed to replace double hung sash and hardware in an existing frame without changing the frame. This product has the same tilt feature as the Marvin double hung.

Drip Cap - A formed aluminum or vinyl piece which is installed at the top of windows and doors that allows water to run off the casing of the unit instead of seeping around the casing and into the unit.