15x21 Hardcore Pro Muir Plein Air Canvas Panel #HA-1521

True 7:5 Photography Proportion - 15x21 Size

Another widely used proportion in photography is the 7:5 aspect ratio, but is relatively uncommon in art, save for the 5x7 size. It is commonly accepted as a pleasing proportion. Some artists choose this proportion to add visual interest by breaking away from more traditional shaped canvas sizes. There are only a handful of standard canvas sizes in this ratio, but there are a whole collection of (what we call) Lost Sizes in this aspect ratio, which are often unknown sizes that add intrigue to the final composition.

Here are a couple of other sizes in the exact same 7:5 proportion:

5x7 • 10x14

Explore Related Products to this 15x21 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

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 15x21 sized Panel, you could buy one pair of 15-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

When you hold a Masterpiece® Hardcore™ Pro canvas in your hand, you can immediately sense the quality materials, workmanship and design of this very fine canvas, as will those who will ultimately acquire your art. The colors and canvas you select becomes the foundation of your painting. Your reputation depends upon the quality of your artwork and the integrity of your material choices. Savvy art buyers and art enthusiasts place a higher value on artwork made with quality materials because they expect their investment in your art will last hundreds, if not a thousand years. Using the best materials is a great investment in your own legacy and your brand.

A little more persistence, a little more effort, and what seemed hopeless failure may turn to glorious success. ♦ Elbert Hubbard

A writer and philosopher of the late 19th and early 20th centuries, Elbert Hubbard was known for his thoughtful aphorisms and motivational insights. Hubbard's life, characterized by creativity and entrepreneurial endeavors, often embraced the spirit of overcoming adversity. This quote encapsulates the essence of his belief in the transformative power of persistence, especially when facing setbacks.

For us in the realm of art, there's a deeply familiar resonance with this sentiment. Each creation is born out of a mix of vision, passion, and countless hours of refinement. There are moments when our creations might seem distant from the masterpiece we envision. Yet, with each additional layer of paint, with every nuanced touch, we inch closer to our envisioned masterpiece. Hubbard's wisdom reminds us that often, it's just a matter of pushing a bit more, refining a tad further, and what was once perceived as a shortfall can blossom into a work of art that speaks to souls.

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We hope to inspire your art with this wonderful quote and our interpretation along with our own one-of-a-kind portrait of Elbert Hubbard..got to love it!