15x21 Elite Professional Shasta Deluxe Cotton 1-1/2" Deep #EH-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.

Explore other sizes in this same 7:5 aspect ratio:

20x28 • 25x35 • 30x42 • 35x49 • 40x56 • 45x63 • 50x70 • 55x77 • 60x84 • 65x91 • 70x98 • 75x105

Explore Related Products to this 15x21 Size:

• Acrylic Primed Linen Elite™: Grenoble™ • Pau™
• Oil Primed Linen Elite™: Isola™ • Poitiers™
• Acrylic Primed Cotton Monet Pro™: Monterey™ • Carmel™ • Tahoe™ • Heavy Weight 14oz cotton • Sierra™
• Oil Primed Linen Monet Pro™: Malibu™ • Vintage L21C™ • Ventura™ • Versailles™
• 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.

Shasta™ 20 oz Acrylic Primed Cotton

Deluxe Heavy Weight Cotton. Super strong yet has a medium supple feel.

• 100% Cotton 14.5 oz; Primed Weight 20 oz per square yard
• Extra Heavy Weight, Strong Weave, Medium Texture
• Sized and Triple 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

Titanium Dioxide (TiO₂) Primer Pigment

Our primer is made with the highest-quality Titanium Dioxide white pigment, which is an excellent pigment for acrylic primed grounds, providing superior whiteness and maintaining excellent flexibility over time. Unlike some other common pigments, such as zinc dioxide, TiO₂ doesn't become brittle as it ages, helping to ensure that your painting will stand the test of time.

15x21 Frame Kit B2 Super Heavy Frame Offers the Ultimate Canvas Support!

• Drawing depicts the exact frame construction, not the proportion
• Precision Machined keyable Super Strong Stretcher Bars (1.5" deep by 2-1/4" wide) allow you to increase the canvas tension
• Super Strong Keyable Brace (3/4" x 3.25") and a regular Cross Brace Included
• The Bars have a clever utility groove on the inside perimeter of the frame to attach the cross braces
• Unique Keyable Cross Braces allow you to tension the canvas in the middle, where it's needed the most
• Cross braces are glued and stapled at the 'cross' for maximum support and rigidity
• Both corner keys and brace keys are pre-installed

Elite™ Professional 1.5" Deep B2 Bar • 1/2" Canvas Clearance

A Canvas Clearance of 1/2" is the space between the Bar and the canvas. Generally speaking, more clearance reduces the risk of the canvas touching the wood and creating unsightly lines during painting. Our design provides the optimal clearance so as not to impact your painting, but still leaving enough wood to the maximize strength of the Stretcher Bar.

Finger Jointed Wood is not meant for Stretcher Bars

Solid wood makes the most dependable Stretcher Bar, because one homogeneous wood member is going to behave similarly across the entire length of the Bar. Whereas, with finger-jointed wood is made-up of multiple pieces of wood, sometimes on the actual joint itself, presenting multiple points of failure which no one can control.

We only use Solid Wood to build our Stretcher Bars because a solid piece of wood will last indefinitely. When we speak of archival value, it's not just the paint you use and the quality of your canvas and ground, even the wood choices manufacturers add or reduce value to your final painting. The fact is, you don't want problems, and finger joints only increase that risk of the wood falling apart in the future.

The glue used to bind finger joints is a water based adhesive and when that wood is exposed to high humidity environments, particularly with exterior walls, the glue joints can give-up. As a manufacturer, Masterpiece® does its part to conserve as much wood as possible, and still provide a quality product that will out-perform any other in the marketplace.

Cross Braces Make it Tighter

A tightly stretched canvas on an un-braced frame overpowers the Stretcher Bars causing them to bow inward and thereby lose tension. Sometimes that bow can expose a space in picture frames.

When we stretch a canvas on a properly supported frame, the cross-braces prevent the Bars from bowing thereby achieving maximum canvas tension. To increase the canvas tension even more, simply tap the corner and brace keys further in their slots. Properly supported frames provide you with the control over the canvas tension of your canvas and painting.

Forests need People, and People Need Forests

The concept of sustainability presupposes a comprehensive engagement of individuals in the art and science of forest stewardship, both in the present and for the well-being of generations to come. Humanity undoubtedly extracts wood from forests to supplement our needs, but they also play a crucial role in bestowing diligent care upon these ecosystems. This stewardship encompasses not only the responsible harvesting of forest resources but also extends to the safeguarding of clean water sources, the preservation of wildlife and their native habitats, and the mitigation of potential threats like erosion, fires, and diseases that could otherwise lead to untimely degradation of these precious woodlands.

Masterpiece® uses only lumber harvested from responsibly and sustainably managed timberlands.

Canvas Tension is in Your Control

In dry climates or air conditioned environments, the lack of moisture in the air causes wood frames to shrink and the canvas fibers to narrow and elongate making the canvas more slack and resulting in a loss of canvas tension. In some instances, the canvas could have waves on the surface resulting in an unsightly viewing experience.

Our Elite™ professional frames provide the functionality for you to slightly expand the size of the frame in the corners and the middle of the canvas, thereby increasing canvas tension all across the surface. The difference between a loose canvas and a tight canvas is just 1/8" of an inch, so a small adjustment using our corner and brace keys makes an important difference in canvas tension.

• Helps to prevent waves that occur in a loose canvas
• Increase canvas tension by tapping-in the corner and brace keys
• True professional class canvases make it possible for you to adjust the canvas tension

MuseumWrap™ Stretching Technique

With more than a half a century of American engineering, Masterpiece® designs and builds its own proprietary stretching equipment that enables us to produce the finest and most tightly-stretched canvas on the market.

• Drum-tight stretch!
• Up to 50% tighter than other methods
• Balanced tension across the surface
• Uncut folded corners make it possible to remove and re-stretch canvas on the same size frame
• Usually the corner folds are on the long sides

Tight'n'Up™ Liquid Canvas Retensioner

While all of our Masterpiece® Pro canvases are stretched very tightly and our frames have a built-in method to increase tension, we have another method to add canvas tension. Tight'n'Up™ Liquid Canvas Retensioner (sold separately) can be sprayed on the back of a canvas to repair most canvas tension issues.

With Tight'n'Up™, you can add tension to just a small area, or a large area. Simply spray it lightly on the back and brush it into the canvas, and within seconds, your canvas becomes tighter and stays tighter. The more you use, the tighter it gets.

Every artist's journey to greatness starts with a blank canvas. Since 1965, Masterpiece® has been the trusted companion in that journey, offering the finest canvases in North America. Your creativity, combined with our canvas, has the potential to turn into a priceless treasure. The choices you make today pave the way for tomorrow's legacy.

Light in nature creates movement in color. ♦ Robert Delaunay

The artistic explorations of Robert Delaunay were often rooted in his fascination with light and its transformative effects on color. His observations, driven by keen sensitivity to his surroundings, led him to discern that light, when it interacts with nature, brings out the vibrancy and dynamism in colors. The interplay between light and pigment is not just a physical phenomenon; it mirrors the delicate balance and interrelationship between different elements in art and life.

We recognize the potency of this relationship. Just as natural light can cast a spectrum of colors, illuminating the darkest corners and revealing hidden details, our own insights and perspectives can bring life to our creations. It's a reminder that the nuances of our work, the subtle gradations and shifts in tone, can evoke powerful emotions and narratives. Harnessing the dynamics of light and color is akin to tapping into the profound connections that bind us all, making art not just a visual treat but a soulful experience.

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We believe in the power of words to inspire, and the magic of art to connect. Enjoy this meaningful quote with contextual background, and admire our unique rendition of Robert Delaunay to complement your imagination. Get busy on your next composition!