On picture frames, 20x15 refers to the artwork or photo opening, measured in inches. So a 20x15 frame is designed to hold a piece that’s roughly 20 inches by 15 inches. You can display it in landscape or portrait—just rotate the frame.

• Outer size varies: The overall footprint depends on the moulding width (some styles are slim; others are up to 3–4 inches wide).
• Depth matters: Interior frame depth can range from about 0.375" to 1.25", which helps if you’re framing thicker items.
• Tip: Check each listing’s exact opening, moulding width, and depth to make sure it fits your piece.

To convert 20x15 inches to square feet, multiply first (20 × 15 = 300 square inches) and then divide by 144. That’s about 2.08 square feet.

• Planning wall space: Use the 2.08 sq ft as a baseline for the art area. The total framed footprint will be larger if the moulding is wide.
• Outer dimensions: A wider frame—say 3–4 inches—adds several inches to each side, increasing overall wall coverage.
• Tip: Review the product’s moulding width and overall dimensions so the frame fits your layout without crowding nearby decor.

A 15x20 frame is made to hold an image that’s approximately 15 inches by 20 inches. You can display it vertically or horizontally.

• Using a mat: If your photo is smaller (like 12x18), add a mat with an opening cut slightly under the photo size (mats are often undersized by ~1/4" to prevent slipping).
• Less common size: 15x20 prints exist but can be less standard than sizes like 16x20, so double-check your print dimensions.
• Tip: Confirm the frame’s listed opening and the mat’s window size to get the reveal you prefer.

No. A3 paper is ISO-sized at 297 × 420 mm, which is about 11.7 × 16.5 inches. A 20x15 frame is 20 × 15 inches, or roughly 508 × 381 mm, so the dimensions don’t match.

• Fit notes: An A3 print will be smaller on the long side and taller on the short side relative to 20x15.
• Workarounds: Consider a mat to center an A3 print within a 20x15 frame, or choose a frame sized specifically for A3.
• Tip: Check both the artwork and frame measurements in inches or millimeters before ordering.

Look for 20x15 floater frames, which are designed for stretched canvases and show a subtle gap around the edges for a gallery-style look.

• Measure thickness: Compare your canvas depth with the frame’s interior depth (some listings note depths around 1.25").
• Hardware: Many frames include hanging hardware; verify what’s included in the product details.
• Clearance: Ensure the canvas fits without rubbing the sides; a small gap protects the edges.
• Tip: If your piece is on panel or thinner canvas, check the rabbet size and consider spacers for a secure fit.