What Are Aluminum Frames, Door and Window Frames, and Aluminum Profiles? How Are They Different?

“Aluminum edge” is a general term commonly used to refer to the aluminum sections around a door or window. The frame is the main structure fixed to the wall opening, while the sash frame surrounds the movable panel and opens or closes together with it. When requesting a quotation, it is best to send photos of the installation area and specify whether you want to check the main frame, sash frame, track, or glass edge so the price can be estimated more accurately.

When an aluminum door or window has a problem, many people want to contact a technician or shop but are unsure what the damaged part is called. Some people simply refer to every part as the “aluminum edge,” which can make it difficult for the shop to assess the issue and may lead to the wrong recommendation.

This article is a basic terminology guide to help you understand what each part of an aluminum door or window is called, how the parts differ, and what information you should prepare before ordering, buying, repairing, or requesting a quotation.

What Is the Difference Between an Aluminum Edge, Main Frame, and Sash Frame?

If you want a quick answer, here are the differences between the three terms people most often confuse:

What Is an Aluminum Edge?

“Aluminum edge” is a general term commonly used to refer to several different parts. It is not the specific name of any one component. When someone says “aluminum edge,” they may be referring to any of the following:

• The aluminum section around a door, which may be the main frame or sash frame
• The aluminum section around a window
• The glass retaining edge within the panel, which helps hold the glass in place
• The aluminum sash frame that moves together with the panel
• The main frame fixed to the wall

Because the term is so broad, simply saying “aluminum edge” is not enough for a shop or technician to provide an accurate quotation. It is better to send a photo or clearly specify which part you mean.

What Is an Aluminum Frame?

An aluminum frame is the outer structure fixed to the wall opening. It is the main part that supports the door or window panel, similar to a “fixed frame” attached to the building. It does not move with the panel.

Main functions of the aluminum frame:

• Fixed to the wall opening and serves as the base of the entire door or window system
• Supports the panel and determines its position
• Helps the panel open and close properly and fit securely
• Affects the overall fit, finish, and water resistance around the edges
• Accurate on-site measurements are required before fabrication or installation because the frame is fixed directly to the wall.

What Is the Difference Between 3-Inch and 4-Inch Aluminum Frames?

Aluminum frames are available in different depths, with 3-inch and 4-inch sizes being among the most common. In short:

What Is an Aluminum Sash Frame?

An aluminum sash frame is the frame surrounding the panel. It holds the glass and moves with the panel when opening and closing. Unlike the main frame, which stays fixed in place, sash frames come in different types depending on the opening system:

• Sliding sash frame: The frame around a panel that slides back and forth along a track
• Casement sash frame: The frame around a panel that opens outward or inward on hinges
• Awning sash frame: The frame around a panel that pushes outward from the top or bottom
• Fixed sash frame: A non-opening frame that remains fixed in place but still surrounds and holds the glass

The sash frame always works together with the main frame. The main frame is fixed to the wall, while the sash frame is the part positioned inside it and, in opening systems, moves when the door or window is operated.

What Is the Difference Between the Main Frame and Sash Frame?

This is one of the most common points of confusion. The table below makes the differences clear:

Main Components of Aluminum Doors and Windows You Should Know

In addition to the main frame and sash frame, an aluminum door or window system includes several other components that work together. Knowing these terms can help you communicate with a technician more accurately:

• Main frame: The main structure fixed to the wall and the base of the entire system.
• Sash frame: The frame around the panel that holds the glass and opens or closes with the panel.
• Track: The running path for sliding panels, located at the top and bottom of the main frame.
• Glass: The glass panel fitted inside the sash frame, available in clear, tinted, tempered, and laminated types.
• Rubber seals / seals / brush strips: Components that help block wind, water, and dust between the panel and the main frame.
• Silicone sealant: Used to seal against water between the main frame and the wall, as well as around the edges of the glass.
• Hardware: Handles, rollers for sliding panels, latches or locks, and hinges.

What Should You Measure Before Ordering or Requesting a Quotation?

To help the shop provide a more accurate quotation, prepare the following information before contacting them:

If the aluminum edge is damaged, can only the edge be replaced?

It depends on which part is damaged and how severe the damage is. In some cases, only the affected component can be replaced, while in others, the entire unit may need to be replaced to ensure strength and safety.

What Should You Consider When Choosing Aluminum Frames and Sash Frames?

Choosing the right frame and sash frame for a project depends on five main factors:

• Opening dimensions: The width, height, and wall depth help determine the appropriate frame size.
• Door or window system: Sliding, casement, swing, and folding systems each require different frames and hardware.
• Glass type and weight: Thicker or safety glass is heavier, so the frame and hardware must be able to support the load.
• Frame color: Black, white, wood grain, champagne gold, or dark gray should be selected to match the style of the home and the glass.
• Actual site conditions: This is especially important for renovation projects, where the opening dimensions may vary from one point to another and should be measured in several locations.

How Can SGQ Help Identify Aluminum Edges, Frames, and Sash Frames and Assess Your Project?

SGQ Khlong Sam supplies aluminum profiles, glass, and hardware, and provides aluminum door and window installation services for homes, shops, and projects. If you are not sure what the part you need is called, you can send photos of the site, opening dimensions, or a preliminary drawing to the SGQ team. We can help recommend the appropriate door or window system, frame size, sash frame, glass, and hardware for the actual project requirements.