28x40 Picture Frames

Is a 28x40 frame the right choice?

A 28x40 frame is the right pick when your poster, print, or artwork measures exactly 28 x 40 inches and you want a finished, protected presentation on the wall. It’s also a strong option when you want to use a mat to elevate a smaller piece with a wider border and more “gallery” presence.

It may not be the best fit if your piece is a different standard poster size (even by 1 inch). In that case, consider choosing the exact size you need instead of forcing the fit.

Measure first: avoid the most common sizing mistake

Before ordering, confirm the artwork size edge-to-edge. Many posters are close to standard sizes but not identical, and a near-match can lead to buckling, exposed edges, or a piece that simply won’t seat properly.

• Measure width and height across the full printed sheet.
• Check whether the poster has uneven borders that change the “true” size you want to show.
• If you plan to mat, measure the artwork area you want visible and allow for slight overlap at the mat opening.

Helpful reference: Measure Art.

Matting a smaller print inside a 28x40 frame

Using a mat can make a smaller print look centered and intentional inside a large frame. Common pairings include:

• 24x36 matted to 28x40 (a popular step-up with a balanced border)
• 22x34 matted to 28x40
• 20x30 matted to 28x40
• 18x24 matted to 28x40 (dramatic, wide mat border)

Two details matter most: the mat opening should be slightly smaller than the artwork for proper overlap, and the border width should feel proportional at this large scale. For deeper guidance, see Do I Want To Mat My Art? and Mat Borders: How Big Should They Be?. If you already know you want to build a matted look, you can start here: Select a custom mat.

Glazing, backing, and depth: what matters at 28x40

Large posters have a lot of surface area, so clarity and protection are important—especially if the frame will face windows or strong room lights. Also confirm the frame has enough depth (rabbet depth) for your stack: poster backing (and mat, if used).

• Glazing choice: prioritize clarity and consider glare based on where it will hang. Learn more about options like acrylic here: Acrylic for picture framing or select acrylic or glass glazing.
• Backing support: a solid backing helps keep large pieces flatter and more secure. See Mounting Board.
• Hanging planning: large frames need reliable hardware and a wall-appropriate approach (drywall, plaster, brick).

Style at a statement size

At 28x40, the frame becomes part of the design. Thin profiles can look clean and modern; wider moldings can add presence and help the piece read as a focal point. Color choice also has a bigger impact at this scale—especially for feature walls and commercial displays.

Related size alternatives (when 28x40 isn’t the right fit)

• If your print is 24x36, consider a dedicated size: 24x36 Picture Frames.
• If your artwork is 18x24 and you don’t want a large mat border, consider: 18x24 Picture Frames.
• If you’re unsure which size you need, use this reference: Custom picture frame sizes guide.