Measuring the inside of a frame tells you the maximum size of the artwork, photo, or matted piece that will fit. It also determines the required size for the frame's cover (like glass or acrylic) and backing board.
Understanding Inside Frame Dimensions
The "inside measurement" of a picture frame refers to the dimensions of the opening on the back side, specifically from the edge of the rabbet on one side to the edge of the rabbet on the opposite side. The rabbet is the L-shaped groove routed into the back of the frame where the contents (artwork, matting, glass, backing) sit.
However, the critical insight from frame measurement is what fits inside. As per the reference:
- "If matting is included, the inside frame dimensions will be the total of the art plus matting." This means the size you're aiming for when ordering or selecting a frame is dictated by the overall size of your matted artwork.
- "The inside measurements of a frame will also indicate the size of the cover and backing." The glass/acrylic and backing board need to fit precisely within these inside dimensions to secure the contents.
Essentially, the inside measurement is the size of the opening behind the frame face, designed to house your artwork, mat, and protective layers. It's the size you state when you order a frame to fit a specific picture or mat.
Key Considerations for Inside Measurement
When determining the inside measurement you need, consider what you are framing:
- Artwork Only: If you are framing a photo or print without a mat, the inside frame dimensions should match the exact size of your artwork. For example, a 8x10 inch photo needs a frame with 8x10 inch inside dimensions.
- Artwork with Matting: If you are using a mat, the inside frame dimensions must be the size of the total package – the artwork plus the matting surrounding it. For example, an 8x10 photo matted to fit a 11x14 frame requires the frame's inside dimensions to be 11x14 inches.
This is crucial because the mat board sits between the artwork and the frame's edge, increasing the overall size that the frame must accommodate.
Inside Dimensions Breakdown
Here’s a simple way to visualize the relationship:
| Item Being Framed | Inside Frame Dimensions Match... |
|---|---|
| Artwork (no mat) | Size of the artwork |
| Artwork + Matting | Total size of the artwork + mat |
| Cover (Glass/Acrylic) | Inside frame dimensions |
| Backing Board | Inside frame dimensions |
Understanding this relationship ensures you select a frame that correctly fits your contents, providing proper support and protection for your cherished items.
