13x21 3D Pro Sierra Canvas 3-1/2" #TE-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.

Explore other sizes in this same 21:13 aspect ratio:

8x13 • 21x34

Explore Related Products to this 13x21 Size:

• Acrylic Primed Cotton: Monterey™ • Carmel™ • Tahoe™ • Sausalito™
• Acrylic Primed Linen: Muir™ • Vintage L22U™
• Alkyd / Oil Primed Linen: Malibu™ • Vintage L21C™
• Vincent™ Pro 7/8 • Monet™ Pro 1.5 • 3D™ Pro 2.5

Sierra™ 11.5oz Acrylic Primed Cotton

Heavy weight and body with a delightful medium tooth and texture; great for heavy paint applications and impasto.

• 100% Cotton 11.5 oz.; Primed Weight 14.6 oz. per square yard
• Heavy Weight, Medium 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

3D™ Pro 3.5 Stretcher Bar • 1/2" Canvas Clearance

1/2" Canvas Clearance 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.

• Produces a 3.5" deep stretched canvas (Actual depth is slightly thinner)
• 1.25" wide Stretcher Bar
• All Bars have an exclusive groove on the inside perimeter of the frame to which cross braces and Diamond Corner Braces attach
• Solid Ponderosa Pine or Fir from the Pacific Northwest

Solid Wood is Archival - Finger Jointed Wood is Not

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 make are part of the archival process.

The principal reason manufactures use finger jointed wood is reduce cost, not increase archival value. Wood constantly grows and shrinks when the environment becomes hotter, or colder, or more humid, or more dry. Because finger jointed wood is made-up of multiple and varied pieces of wood, with varying grain patterns and densities, they each absorb and shed moisture at varying rates, which works on the glue joints that hold them together, causing the wood to bow and the joints to eventually fail, and certainly not consistent with increasing the archival value of your artwork frame support.

As a manufacturer, we do our part to conserve as much wood as possible, and still provide a quality made product that will out-perform any other in the marketplace.

13x21 3.5" Deep Edge Heavy Frame Offers Maximum Support!

• Drawing depicts the exact frame construction, not the proportion
• 3.5" Deep Edge K3 Heavy Stretcher Bars are precision machined with a unique double tongue-and-groove corner joint that provides rock-solid torsional rigidity that resists warping or twisting, which is an important benefit for such a deep edge canvas
• No Brace Required for this size
• To increase canvas tension, remove any staples in the corners and tap all of the expansion keys further into their respective slots, then tension and re-staple the canvas in the corners

Our Ecosystem Depends on Healthy Forests

Forests play a vital role in our planet's ecosystem. They absorb carbon dioxide, filter air and water, and provide habitat for countless species of plants and animals. By using sustainably sourced lumber, we can help to protect these important ecosystems and ensure that they continue to provide these valuable services for generations to come.

MuseumWrap™ Stretching Technique

With more than 60 years 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

Since 1965, our passion for perfection has driven us at Masterpiece® to construct professional quality canvases that artists around the nation desire. Your art is better and more valuable when the materials you use are complementary to the blood, sweat, and passion you will paint on top.

The greatest virtue of man is perhaps curiosity. ♦ Anatole France

Anatole France, the Nobel laureate and witty French writer of the late 19th and early 20th century, had a knack for capturing profound truths with a sprinkle of humor and elegance. Born Jacques Anatole François Thibault, he adopted his pen name and quickly rose to fame with works that often reflected his skeptical and ironic approach to life. Now, isn't it amusing that a man so curious about life's quirks and inconsistencies would highlight curiosity as mankind's pinnacle virtue? For artists, this sentiment is especially resonant. It's that insatiable curiosity that drives us to pick up the brush, mold the clay, or sketch the world as we see it. Every stroke, shade, and texture is a testament to our quest to understand, interpret, and reimagine the universe around us.

When the canvas stares back at us, blank and intimidating, it's our inherent curiosity that prods us to splash it with color and meaning. Akin to France's own journey through the pages of his books, exploring realms of satire, society, and the human psyche, artists embark on adventures with every piece they create. We dare to ask the questions others might shy away from, to explore uncharted territories of emotion and expression. Anatole France might jest about our ceaseless inquisitiveness, but deep down, he knew that without it, the world would be void of the magic we bring. It's our insatiable curiosity that eventually leads us to our next masterpiece!

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With an artist's spirit and a modern touch, we bring you this hand-selected quote and provide context to its meaning. To tie it all together, we include our own one-of-a-kind portrayal of Anatole France. Now let your colors flow!

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.