13x21 Hardcore Pro Muir Plein Air Canvas Panel #HA-1321

True Fibonacci Proportion - 13x21 Size

This special 13x21 size is part of the Fibonacci Series of intriguing sizes that are closely related to the Golden Mean. It's exact aspect ratio is 21:13 and is a truly unique and inspiring canvas size.

Here are a couple of other sizes in the exact same 21:13 proportion:

5x8 • 8x13

Explore Related Products to this 13x21 Size:

• Acrylic Primed Linen: Santa Cruz™ • Pau™
• Acrylic Primed Cotton: Monterey™ • Carmel™ • Heavy Weight 14oz cotton
• Alkyd / Oil Primed Linen: Malibu™ • Ventura™ • Versailles™ • Poitiers™
• Vincent™ Pro 7/8 • Monet™ Pro 1.5 • 3D™ Pro 2.5 • 3D™ Pro 3.5

Vegan Ground:

There are no animal products that make-up the sizing and the primer for this fine canvas. Historically, traditional canvas grounds have included egg tempura, pigments with cow urine, and of course, rabbit skin glue. In today's rapidly advancing world, there are many more choices available for artists who prefer non-animal based products that perform far better than their animal-based predecessors.

Muir™ Acrylic Primed Belgian Linen

Characteristic linen type surface texture. It has a bright white tone.

• 100% Belgian Linen 5 oz.; Primed Weight 12 oz. per square yard
• Medium Weight, Open Weave, Textured Surface
• Double Sized and Double Primed with acid-free archival quality acrylic gesso
• Impenetrable ground prevents oil paint from leaching through and harming the canvas
• For acrylics, oils, alkyds, and water miscible oil paints
• Linen has natural oils that prevent disintegration over time.

Titanium Dioxide (TiO₂) Primer Pigment

This primer contains premium-grade Titanium Dioxide (TiO₂) white pigment, renowned for its exceptional performance in acrylic priming. Its standout feature is its enduring whiteness, coupled with remarkable flexibility that persists over time. In contrast to other pigments such as zinc dioxide, Titanium Dioxide maintains its resilience, preventing brittleness as it ages. This quality ensures that artworks retain their integrity and will stand the test of time.

Our Hardcore™ Pro Pro Canvas Panels are the flattest on the market. They are made using MDF (medium density fiberboard) which is the highest quality engineered wood board on the market. Moisture in the board can cause undesirable results to the panel and your artwork, which is why we size the board with four layers on the front before the canvas is mounted, thereby defending against moisture getting into the board and underneath your artwork.

Canvas Panels should be as flat as possible, otherwise, they don't display well in a frame, and can create spaces between the artwork and the frame. A bowed panel is also a sign of having been impacted by the effect of moisture. Canvas can shrink, even after it is mounted on the board. For this reason, Masterpiece® developed a unique proprietary process that stress-relieves each panel, thereby virtually eliminating the bow that is commonly found in competing panel products. Hardcore™ Pro Canvas Panels provide a stable foundation for your art.

Panel Porter™ wet carriers are the most secure and versatile on the market!

• Mix and match to make any size carrier you want!
• For this 13x21 sized Panel, you could buy one pair of 13-Inch and one pair of 21-Inch Panel Porter™
• You can then combine these sizes with other size Panel Porters™ to create an entire new wet panel carrier.
• Each carrier securely transports two wet panels
• Metal locking pins secure frame together to protect your precious artwork
• Carry Panel Porters™ in your bag or backpack to match the panel sizes you paint
• Assemble frame carriers after you have completed your paintings
• Air holes in the corners allow your painting to breathe while drying
• Panel Porters™ are great for shipping your artwork
• Masterpiece® makes over 75 standard sizes of canvas panels, so with Panel Porter™, you are liberated to paint sizes you've never tried before and still have an economical and secure carrier to match

Hardcore™ Pro Professional canvases are built one-by-one and stretched using our proprietary stretching process called, MuseumWrap™, which relies on in-house custom-built pneumatic machinery that delivers consistently drum-tight stretched canvas, balanced tension across the canvas surface, neatly folded uncut corners, and paintable edges. It is the absolute best way to stretch a canvas.

Art is the storehouse of universal, intangible wisdom. ♦ Wassily Kandinsky

One of the pioneers of abstract art, Wassily Kandinsky consistently explored the deeper spiritual dimensions of art throughout his career. Recognized for pushing boundaries and challenging the conventional definitions of form and color, Kandinsky sought to elevate the viewer's experience to a realm beyond the physical world. He believed that art wasn't merely a depiction of the tangible but a medium through which deeper truths and spiritual realities could be communicated.

Art, in Kandinsky's view, goes beyond visual representation. It taps into collective emotions, memories, and shared understandings, offering insights that transcend cultural and temporal boundaries. When we artists produce work, we tap into this vast reservoir of shared human experience, contributing to a lineage of understanding. Our creations, in turn, become part of this grand storehouse, adding layers of meaning, emotion, and perspective for generations to come. By connecting with the intangible wisdom that art embodies, we continue the legacy of thinkers like Kandinsky and enrich our shared human narrative.

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To enhance your creative exploration of our site, we offer the insightful wisdom of Wassily Kandinsky, our interpretation, and little one-of-a-kind portrait that we created. Now go paint!