Choosing the right passe-partout sizes helps protect artwork, enhances presentation, and fits standard frame openings. This guide highlights five reputable options compatible with 50×50 cm framing or close equivalents, reflecting acid-free materials, precision cuts, and durable cores. Each product section includes a quick reference, image, and features to help you compare at a glance.
| Product | Brand | Opening Size | Outside Size | Core/Material |
|---|---|---|---|---|
| Golden State Art 11×14 Mats | Golden State Art | 8 x 10 5/8 in | 11 x 14 in | Acid-Free, White Core |
| Frame Company Passe-partouts 50×40 Black (10-Pack) | Frame Company | 40 x 30 cm opening | 50 x 40 cm | White Core, Acid Free |
| walther design PA070B Black Passepartout | walther design | 40 x 50 cm image window | 50 x 70 cm | Acid-Free Cardboard, 1.4 mm |
| Frame Company 50×40 Black V-Groove | Frame Company | 40 x 30 cm window | 50 x 40 cm | White Core, Acid Free |
| Hama Premium Passe-Partout 40×50 Black | Hama | 30 x 40 cm image area | 40 x 50 cm | White Bevel, White Core |
Note: All products listed are suitable for common frame formats around the 50×50 cm target, with a mix of 40×30 cm and 40×50 cm openings that can accommodate 50×50 visually when paired with compatible frames. The materials emphasize acid-free standards and beveled edges for a clean, museum-quality presentation.
Golden State Art 11×14 White Mat Pack

The Golden State Art pack includes 50 acid-free single mats. Each mat has a 8 x 10 1/2 inch opening designed to fit 8.5 x 11 photos or certificates, with an outside size of 11 x 14 inches. The mats are 4-ply thick (about 1/16 inch) and feature a white core with a pre-cut bevel. These are ideal for bulk framing projects or gallery displays where a crisp, bright white presentation is desired.
Frame Company Passe-Partouts 50×40 Black, 10-Pack

These mounts are cut from high-quality Daler Rowney 1.4 mm white core acid-free material. They offer a 50 x 40 cm outside size with a 40 x 30 cm opening in black and are available in seven colors. The mount window is cut at a 45-degree angle, delivering a classic bevel that complements modern and traditional frames alike.
walther design Passepartout Black PA070B

walther design PA070B is a black passe-partout suitable for a 40 x 50 cm image window within a 50 x 70 cm frame. It uses acid-free cardboard with a 1.4 mm thickness and features a distinctive white core and sharply cut diagonal edges. This option emphasizes a clean, contemporary presentation while maintaining archival quality.
Frame Company Passe-Partouts 50×40 Black (V-Groove)

This Frame Company set features a 50 x 40 cm overall size with a 40 x 30 cm opening in black and a highlighted V-Groove along the edge. Made with white-core, acid-free material, it provides a bold, dramatic border that enhances dark frames and high-contrast artwork. The 45-degree angled window adds depth and visual focus to the displayed piece.
Frame Company Oxford Blue Passe-Partout 50×40

Frame Company offers a 50 x 40 cm passe-partout available in seven colors, including Oxford blue. The mount window is cut at a 45-degree angle, with white core and acid-free construction. This option provides color variety while preserving archival quality and a clean bevel that complements a wide range of art and photos.
Hama Premium Passe-Partout Black 40×50

The Hama Premium Passe-Partout emphasizes the picture with a rectangular mount and a white bevel cut. It is designed for 40 x 50 cm frames and offers a crisp border that enhances contrast and focus on the image. The product is part of a line that prioritizes presentation quality and archival standards.
Hama Picture Frame Mount 40×50 White

Hama Picture Frame Mount offers a white passe-partout for 40 x 50 cm frames with a rectangular window and a white bevel cut. This option emphasizes a clean presentation with a bright white surround, suitable for a variety of photography and prints that benefit from a minimalist, modern look.
Walther Design PassepArtouts Snow White 50×70

Walther Design PassepArtouts Snow White provides a 50 x 70 cm frame size with a 40 x 60 cm image window. The passe-partout has a 1.4 mm thickness and acid-free cardboard with a white core. It delivers a crisp, bright border suitable for larger displays while maintaining archival quality and a clean white aesthetic.
Buying Guide: Key Considerations For 50×50 Style Framing
- Opening size versus artwork dimensions: Align the window to your art while ensuring a balanced margin. If your image is 40 x 50 cm, pick a 50 x 70 cm frame with a matching opening or consider a 50 x 40 cm mount with the appropriate frame.
- Core material and acidity: Choose white-core, acid-free boards to prevent discoloration and maintain archival integrity for photos, certificates, and art prints.
- Bevel angle and edge finish: A 45-degree bevel adds depth and focus, while a white bevel provides a bright, clean border that complements most artworks.
- Color options: Black, white, ivory, and other colors can dramatically affect presentation. Black can create contrast for colorful works; white usually offers a neutral, modern look.
- Thickness and durability: 1.4 mm (approximately 4-ply) cores offer sturdiness for frequent framing or long-term display, though heavier frames may require more robust mats.
- Compatibility with frames: Check outer dimensions and mounting depth to ensure the passe-partout fits your chosen frame without interference.
- Bulk versus single-packs: For gallery or classroom use, bulk mats reduce cost per piece, while single packs target specific, small-scale projects.
- Acid-free certification: Ensure products advertise acid-free and white-core properties to safeguard artwork over time.