What is the difference between stretcher bars and canvas stretcher bars?

Many people use the terms stretcher bars and stretcher bar slats interchangeably, but there is indeed a subtle difference. In practice, they often mean almost the same thing, but the focus is slightly different: stretcher bars are the individual bars, while a stretcher frame set usually refers to the bars as part of the complete stretcher frame.

What are stretcher bars?

Stretcher bars are wooden bars used to create a stretcher frame. Together, four stretcher bars form the frame onto which a canvas or painting canvas is stretched.
The bars usually have a profile with a raised edge, so that the canvas is slightly elevated from the wood and is less likely to get impressions or damage.
For larger sizes, crossbars or additional support bars can be added for extra stability.

What is a stretcher frame bar?

By a stretcher frame bar, people usually mean the same basic bar as a stretcher bar: the wooden bar from which a stretcher frame is constructed.
The term is often used as a general description, while "stretcher bar" is the more common professional term in the art and framing world.
So, a stretcher frame bar is not something entirely different, but mainly another name for the bar in the frame.

The real difference

The difference lies mainly in the terminology:

• Stretcher bar: the professional term for the bar used to build a stretcher frame.

• Stretcher frame bar: a more descriptive or informal name for the same bar.

• Stretcher frame: the complete wooden frame consisting of multiple stretcher bars.

In short: a stretcher bar is the component, a stretcher frame is the whole.

Frequently asked questions

Are stretcher bars and stretcher frame bars the same?
Almost. In practice, they both refer to the bars from which a stretcher frame is built.

What do I buy if I want to stretch a canvas?
You usually buy stretcher bars or a complete stretcher frame set, depending on how complete the product is offered.

Why do stretcher bars have a special profile?
This profile ensures that the canvas does not lie directly against the wood, which helps prevent damage and impressions.