Glossary

Knowing the right names for parts of your window can help you avoid confusion. Read through these important window parts terms and definitions for Durabuilt windows and you’ll be set.

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Connect You

Durabuilt department responsible for communicating with customers regarding their order scheduling, shipping and service.

Dead-Air Chamber

Space between walls of vinyl extrusions used to trap air, providing insulation.

Decorative Glass

Door insert, or doorlite, using a combination of decorative glass and caming material.

Dentil Shelf

Decorative ledge installed on the exterior of the door slab on a Craftsman style door.

Dew Point

The temperature at which the air can hold no more humidity and it condenses to liquid.

Direct Glazing

Sealed unit installed into a frame as opposed to being glazed into a sash.

Door Frame

Wood, or composite, jamb parts and sill assembled to form a frame for a door slab.

Door Jamb

Sides and top of a door frame.

Doorlite

An insulating glass unit installed into a door slab.

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© 2025 Durabuilt

© 2025 Durabuilt