An 11×17 print fits a frame labeled 11×17 with no mat, or a larger frame with a mat opening cut slightly smaller than the artwork so the paper stays held in place.
A frame’s listed size is its inside opening, so an 11×17 frame is built for an 11×17 print — while a matted frame is built around an opening deliberately cut smaller than the art. That choice changes the frame, the finished size, and the wall space you need.
What Size Frame Does an 11×17 Print Actually Need?
An 11×17 print needs an 11×17 frame for a borderless look, or a larger frame with a mat for a visible border. Frame makers state that the size on the label is the inside dimension, so an 11×17 frame means an 11×17 opening — not the outer measurement.
That clears up the biggest confusion. Shoppers see “17×23” on a box, assume the poster is too small, and walk away. In reality, an 11×17 satin black frame with a 2 inch single super white mat has a finished frame size of 17×23 inches, a frame width of 1.25 inches, and a glass size of 15×21 inches. The poster still fits — the mat adds the extra inches, 2 inches per side.
11×17 also goes by tabloid and ledger, but those labels describe paper, not frames. A frame listing will say 11×17, and that is the number that matters.
How Much Mat Border Overlap Do You Need?
A mat opening should be cut slightly smaller than the print so the overlap grips the paper and holds it flat. Without that bite, the print can shift behind the mat.
How much smaller depends on the maker. One listing cuts openings 0.5 inch smaller than the listed photo size, while Artelo cuts openings about 1/8 inch smaller. Both work — the difference is how much artwork gets covered. A half-inch overlap hides a full inch of width and height, so if the poster has margin text or a signature near the edge, a lighter overlap like an eighth of an inch protects more of the image.
Here is how common mat-and-frame pairings shake out for 11×17 art, though exact combinations vary by product and desired border:
| Frame Approach | Display Opening | Finished Size Feel |
|---|---|---|
| Frame labeled 11×17, no mat | Full 11×17 image, edge to edge | Matches the print itself |
| 14×20 frame with mat | Opening under 11×17 for overlap | Thin border, modest wall footprint |
| 16×20 frame with mat | Wide border on all four sides | Classic gallery look, mid-size |
| 18×24 frame with mat | Deep border, small image | Statement piece, large footprint |
| Ready-made matted wood frame | 7.5×11.5 opening for 8×12 art | Heavy mat, reduced image |
| A3 frame, 29.7 x 42 cm | Not an exact 11×17 match | Risk of a loose or tight fit |
Notice that last row. 11×17 measures 27.9 x 43.2 cm, while A3 measures 29.7 x 42 cm — close, but not the same rectangle, so an A3 frame may not seat an 11×17 poster properly.
Ready-made matted frames can also shrink your image more than expected. One matted wood frame lists outer dimensions of 13.5×19.5 inches, a mat-free display area of 10.5×16.5 inches, and a mat opening of 7.5×11.5 inches in the variant built for an 8×12 poster — two frames listed for the same wall can produce very different pictures.
To skip the measuring, a roundup of tested 11×17 poster frames narrows the field to options that actually fit the print.
What to Check Before You Buy
Confirm the frame’s inside opening, depth, and finished outer size before checkout — those three numbers decide whether your print fits, sits flat, and hangs where you planned. Frame USA’s sizing guidance is the practical place to verify how listed dimensions work, and covers the size conversions that trip people up.
- Inside opening, not outside size: the label should describe the opening the print sits in.
- Rabbet depth: product pages state thickness limits and rabbet depth, so check that your print plus backing closes the frame cleanly.
- Mat overlap: expect an opening smaller than 11×17, sometimes by 1/8 inch, sometimes by 0.5 inch.
- Finished outer dimensions: a matted frame can run several inches larger than the print on every side, so measure your wall first.
- Paper size, not region: 11×17 is not A3, and treating them as interchangeable invites a poor fit.
Match the frame to the print’s purpose and the rest resolves itself. A borderless 11×17 frame suits a poster you want loud and full-bleed; a larger matted frame suits art you want to breathe.
FAQs
Is an 11×17 frame measured by its inside or outside size?
Frame makers list the inside opening, so a frame labeled 11×17 is built for an 11×17 print. The outside dimension will be larger, especially with a mat or wide molding. Always confirm which measurement a listing quotes.
Can I put an 11×17 print in a 16×20 frame?
Yes, with a mat cut for 11×17 artwork. The mat opening gets cut slightly smaller than the print so the overlap holds it in place, and the extra frame area becomes the visible border. The finished piece will be noticeably larger than the poster.
Why is my mat opening smaller than my print?
That overlap is intentional. Cutting the opening slightly smaller — about 1/8 inch in some products, 0.5 inch in others — lets the mat grip the paper and keep it from shifting. It does mean a sliver of your image sits hidden behind the mat.
References & Sources
- Frame USA. “Picture Frame Sizes” Explains standard frame sizing and how listed dimensions relate to artwork.
- Artelo. “Mat Sizes for Artelo Frames” States mat openings are cut about 1/8 inch smaller than the listed size.
- Shotkit. “Frame and Mat Dimensions for Prints” Covers mat and frame pairings, including 11×17 and larger frame setups.
