21x34 3D Pro Ventura Canvas 2-1/2" #DV-2134

True Fibonacci Proportion - 21x34 Size

This special 21x34 size is part of the Fibonacci Series of intriguing sizes that are closely related to the Golden Mean. It's exact aspect ratio is 34:21 and is a truly unique and inspiring canvas size.

Explore other sizes in this same 34:21 aspect ratio:

8x13 • 13x21 • 34x55 • 55x89

Explore Related Products to this 21x34 Size:

• Alkyd / Oil Primed Linen: Malibu™ • Vintage L21C™ • Versailles™ • Isola™ • Poitiers™
• Raw Unprimed Linen: Torrey Pines™ • Mandalay™
• Acrylic Primed Linen: Muir™ • Vintage L22U™ • Santa Cruz™ • Saint-Cloud™ • Grenoble™ • Pau™
• Acrylic Primed Cotton: Monterey™ • Carmel™ • Tahoe™ • Heavy Weight 14oz cotton • Sierra™ • Shasta™
• Vincent™ Pro 7/8 • Monet™ Pro 1.5

Ventura™ Alkyd Oil Primed Belgian Linen

This strong and fine weave linen has more of an even tooth and absorbent quality to the ground. It has a light gray tone.

• 100% Belgian Linen 7 oz.; Primed Weight 11.3 oz. per square yard
• Medium Heavy Weight, Fine Weave, Fine Texture
• Double Sized and Double Primed with acid-free archival quality alkyd ground
• Impenetrable ground prevents oil paint from leaching through and harming the canvas
• For oils, alkyds, and water miscible oil paints
• Linen has natural oils that prevent disintegration over time.

3D™ Pro 2.5 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 2.5" 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

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.

21x34 2.5" Deep Edge Heavy Frame Offers Maximum Support!

• Drawing depicts the exact frame construction, not the proportion
• 2.5" Deep Edge K2 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
• One super strong 3/4" thick keyable brace provides maximum possible support for this 21x34 frame - Brace is permanently installed in the frame, but canvas tension may be increased by tapping-in the keys or wedges that slightly expand the size of the frame
• The Stretcher Bars have an proprietary utility groove on the inside perimeter of the frame which is used to attach braces and other optional frame supports
• The Masterpiece brace feature an exclusive system that allows you to increase the tension to the middle of the canvas, where the tension is needed the most; it's so unique it earned us a patent
• To increase canvas tension: 1) remove any staples in the corners and those that retain the brace keys in the middle, 2) tap all of the expansion keys further into their respective slots, 3) tighten and re-staple the canvas in the corners

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 3D™ Pro 2.5 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

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 a canvas is stretched 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.

Sustainability in our Forests and our Communities

At Masterpiece®, we believe in responsible and sustainable business practices. That's why we only use lumber from sustainably managed forests in our products. By doing so, we can help to protect our planet's forests, reduce our environmental impact, and support the communities that depend on these valuable resources.

Specially Dried and Heat Treated Lumber

We source our wood from a select group of top-tier environmentally conscious lumber mills in the Pacific Northwest. These mills specially dry and heat-treat the lumber to our specifications, resulting in about half the moisture content compared to wood from typical home improvement centers or lumber yards. This process makes the wood stronger, reducing the likelihood of cracking, splitting, or warping. While the wood we use comes at a higher cost, it ensures a more dimensionally stable end product. This stability is crucial for crafting fine professional canvases that support your invaluable art over time.

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

With over five decades of commitment, Masterpiece® stands as a testament to unrivaled canvas craftsmanship in North America. Choosing the right canvas is an investment not just in materials, but in the future value and longevity of your artwork. Make choices today that stand the test of time and reflect your dedication as an artist.

I don't paint dreams or nightmares, I paint my own reality. ♦ Frida Kahlo

The indomitable spirit of Frida Kahlo shines brightly in these words. Despite enduring immense physical and emotional pain throughout her life, Kahlo harnessed it all, turning it into groundbreaking art. Her works, drenched in vibrant colors and profound symbolism, reflect the rawness of her experiences, her pain, love, and her relationship with the world.

Artists, by virtue of our craft, have the unique privilege of manifesting our truths onto the canvas. While the world might see them as mere reflections, for us, they are slices of our very soul. Kahlo reminds us that authenticity, rather than any idealized vision, is what resonates the most. In acknowledging and embracing our reality, we not only find our most genuine expressions but also connect deeply with those who perceive them.

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We've handpicked this quote and our interpretation of it's meaning to inspire your art. And we honor the legacy of Frida Kahlo by creating this one-of-a-kind portrait to tie it all together. Start Painting!

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.