Door Terminology Explained

Everything You Need To Know About
Front Entry Door Terminology

An Expert Guide To Help You Design A Perfect Entryway

When considering a new fiberglass entry door, it is important to understand the key terms and technologies used in their construction. From pre-hung doors to insulated cores to durable weatherstrips – there are many components that can make or break the performance of an entryway.

Understanding some of the door terminology used by industry pros can help you make an informed decision. You’ll have the knowledge you need to make your search for the best fiberglass entry doors a breeze.

Let’s look at the different parts of a door and how they fit into the process.

Door Jamb

The door jamb holds the door in place and acts as a stabilizing agent. It also serves to protect against weather and external elements, as well as to keep out unwanted guests.

The frame must be strong enough to support the weight of the entire door and prevent it from warping or sagging. To keep everything tightly secured, nails or screws can be used to attach all of the parts.

Depending on the type of frame you choose, you may need additional reinforcements, such as corner blocks or shims, for extra stability if your wall is not correctly plumb. In addition, frames can often be customized with decorative trim to match the overall look of a home’s exterior.


Sidelights are windows that run along the sides of a door. They can be full-length or short panels that can increase the amount of natural light that enters a space and improve energy efficiency.

The panels come in various sizes and styles, allowing you to select the perfect one that enhances your home’s design. Additionally, they can be combined with other features, such as transom windows or storm doors, for a complete look.

Glass Inserts

Glass inserts on doors are an effective way to enhance the look and feel of any home while also providing additional insulation. Double or triple glazed glass inserts provide added protection from outside noise and weather, improving your overall comfort. Installing glass inserts on your doors will help create an inviting atmosphere.


The sill or threshold is the metal part at the bottom of the door that typically helps create a seal between an interior and exterior space. This important component not only keeps drafts out and helps regulate temperatures in your home, but it can also add an extra layer of security by offering an additional barrier against potential intruders such as bugs and pests.

Today’s Entry Doors Offers The Best Front Door
Configurations For Your Property

Today’s Entry Doors has a wide selection of door configurations and components to create the perfect door setup for your property. With a lifetime warranty on our Therma-Tru entry doors and other options, you can rest assured that your entryway is secure and energy-efficient. Plus, we provide a proven process to ensure everything is installed and functioning correctly.

Contact us today or call (714) 974-5728 to schedule an appointment with one of our knowledgeable professionals and learn more about your perfect entry door.

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