The difference comes down to how much metal framing surrounds the glass: ranging from fully supported (framed) to minimal hardware (frameless).
Here’s a quick breakdown:
Framed shower doors
Feature an aluminum frame around the entire glass panel for full structural support.
- Glass is enclosed on all sides
- Provides a traditional, sturdy look
- Generally, a budget-friendly shower door choice
Semi-frameless shower doors
- Offer a balance between structure and openness.
- No frame directly attached to the glass panel
- Includes more substantial metal side pieces, plus a top and bottom track
- Delivers a clean, open feel with a bit of visual contrast from the hardware finish

Delta® Ashmore semi-frameless shower door is a good example.
Frameless shower doors
Use minimal hardware and no surrounding direct frame attachment for a sleek, modern look.
- Glass panels are not enclosed in a frame
- Easier to clean with fewer edges and crevices
- Creates a more open, airy feel in the bathroom

Delta® Paxos frameless sliding shower door is a great example of how frameless designs can modernize bathrooms with a clear and airy look.
No matter which style you prefer, rest assured that all Delta® shower doors feature quality tempered glass (1/4", 5/16", or 3/8") for durability and a premium appearance.