For artwork that measures 30x40 cm, look for a frame labeled 30x40 cm. That designation typically refers to the inner display opening, so it’s designed to hold a print of that exact size without trimming.

• Metric vs. inch listings: 30x40 cm is roughly 12x16 inches, so frames marketed as 12x16 can also work if the inner opening matches.
• Avoid mix-ups: Don’t confuse 30x40 cm with 30x40 inches—those are very different sizes.
• Check the details: Review the product description for the exact inner dimensions and whether it includes a protective cover.

If you prefer a border or mat, consider a larger overall frame with an opening cut to 30x40 cm.

A poster that measures 30x40 inches typically fits a frame labeled 30x40 inches. On this page, you’ll find options made from wood, MDF, and metal in a range of finishes.

• Poster frames: Designed for thin prints; many include clear or anti-glare covers.
• Snap frames: Front-loading designs can make swaps easier, often with a protective PET cover.
• Look at glazing: Covers may be acrylic, plexi, or PET; materials vary by item.
• Style choices: From modern black or white to metallic and ornate profiles.

Review the product’s inner display size and what’s included (backing, cover, hanging hardware) to be sure it suits your poster and how you plan to hang it.

They’re different units and very different sizes. 30x40 cm is approximately 11.8 x 15.7 inches (often rounded to 12x16), while 30x40 inches is much larger.

• 30x40 cm: Common for smaller prints and craft projects; sometimes cross-listed as 12x16 inches.
• 30x40 inches: Poster-sized wall art; takes significantly more wall space.
• Product listings: You’ll see both units on this page. Always confirm whether the size is in inches or centimeters.

Before you buy, match the frame’s inner display size to your artwork’s measurements in the same unit. When in doubt, check the specification section for the exact dimensions.

In frame sizing, 30x40 usually refers to the inner display opening—not the outer frame dimensions. That means it’s designed to hold artwork that measures 30x40 in the listed unit (inches or centimeters).

• Unit matters: Frames here may be 30x40 inches (poster size) or 30x40 cm (roughly 12x16 inches).
• Materials and finishes: Options include wood, MDF, and metal in black, white, silver, gold, and more.
• Covers: Some include acrylic, plexi, or anti-glare PET covers.

Check the product details for inner dimensions, orientation options, and what’s included so you can match the frame to your print and your preferred look.

Most 30x40 cm diamond paintings are close to 12x16 inches, so a frame labeled 12x16 can work if the inner display opening aligns with 30x40 cm (about 11.8 x 15.7 inches). On this page, there are also frames specifically described for 30x40 cm diamond art.

• Exact fit: Verify the frame’s inner/display size in the specs.
• Easy-mount options: Some diamond art frames are self-adhesive or magnetic for quick mounting.
• Border preference: If you want a visible border, choose a larger frame with a mat cut to 30x40 cm.

Double-check unit labels (cm vs. inches) to avoid ordering a much larger 30x40 inch frame by mistake.