20x20 3D Pro 3.5" Deep K3 Stretcher Frame Kit

True 1:1 Square Proportion - 20x20 Size

The 20x20 square size is a little less common but gaining in popularity.

The square is perhaps the most intriguing proportion, as it is root of all of the other proportions. It is commonly used in both photography and art. Squares are typically used as the center canvas of a triptych or as a single canvas hung at a 45° angle. The square proportion is long used with medium format professional cameras, and most photographs we see on websites and social media are based on square images. Since all sides of the canvas are the same length, your eye is drawn evenly across the surface of the painting creating a sense of harmony, balance, and a generally a pleasing visual experience. The square format is also a good choice for artists who focus on geometric shapes or patterns in their work, as the regularity of the square shape can help reinforce these elements. Some artists enjoy the challenge of working within the confines of a square format, as it forces them to think creatively resulting in intriguing compositions.

Explore other sizes in this same 1:1 aspect ratio:

100x100 • 101x101 • 102x102 • 103x103 • 104x104 • 105x105 • 106x106 • 107x107 • 108x108 • 109x109 • 110x110 • 11x11 • 111x111 • 112x112 • 113x113 • 114x114 • 115x115 • 116x116 • 117x117 • 118x118 • 119x119 • 120x120 • 12x12 • 13x13 • 14x14 • 15x15 • 16x16 • 17x17 • 18x18 • 19x19 • 21x21 • 22x22 • 23x23 • 24x24 • 25x25 • 26x26 • 27x27 • 28x28 • 29x29 • 30x30 • 31x31 • 32x32 • 33x33 • 34x34 • 35x35 • 36x36 • 37x37 • 38x38 • 39x39 • 40x40 • 41x41 • 42x42 • 43x43 • 44x44 • 45x45 • 46x46 • 47x47 • 48x48 • 49x49 • 50x50 • 51x51 • 52x52 • 53x53 • 54x54 • 55x55 • 56x56 • 57x57 • 58x58 • 59x59 • 60x60 • 61x61 • 62x62 • 63x63 • 64x64 • 65x65 • 66x66 • 67x67 • 68x68 • 69x69 • 70x70 • 71x71 • 72x72 • 73x73 • 74x74 • 75x75 • 76x76 • 77x77 • 78x78 • 79x79 • 80x80 • 81x81 • 82x82 • 83x83 • 84x84 • 85x85 • 86x86 • 87x87 • 88x88 • 89x89 • 90x90 • 91x91 • 92x92 • 93x93 • 94x94 • 95x95 • 96x96 • 97x97 • 98x98 • 99x99

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

No Finger Joints!

Solid Wood is far superior to finger jointed wood, which is many small pieces glued together, each with varying grain densities that absorb and shed moisture at varying rates, expanding and contracting non-uniformly as environmental conditions change, and causing the wood to bow and the finger joints to eventually fail.

A single homogeneous kiln-dried solid wood Stretcher Bar outperforms and outlasts a finger jointed Bar whose sole purpose is to save the manufacturer cost, not contribute to the archival value of artwork intended to last a millennium. 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.

• Super strong 3D™ Pro K3™ Stretcher Bar is a very popular among contemporary artists whose painting will be displayed without a frame.
• For this 20x20 large size frame, the frame provides the ultimate foundation for your art with increased strength and stability
• Provides a 3.5" deep stretched canvas which makes a bold and commanding display
• 1-1/4" wide Stretcher Bars
• 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

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.

Specially Dried and Heat Treated Lumber

Our wood is handpicked from a curated group of environmentally responsible lumber mills in the Pacific Northwest. By adhering to our precise drying and heat-treatment standards, these mills produce lumber with nearly half the moisture you'd find in common home improvement outlets or lumber yards. This meticulous process not only enhances the wood's strength—minimizing risks of cracks, splits, or bends—but also elevates its dimensional stability. Such quality, despite its premium, is paramount in creating professional canvases designed to uphold the sanctity of your cherished art throughout the years.

30x30 is the Canvas Size Needed for this 20x20 Frame

Please note that you will need a canvas that is at least 10 Inches larger than the actual frame size to ensure proper stretching. This will provide ample material to stretch the canvas and attach it to the back of the frame. If you prefer to attach the canvas from the edge of the stretcher frame, you can reduce the size of your canvas by approximately 3/4" all the way around the frame. This will allow you to paint on the edge of the canvas and hang your artwork without needing a separate picture frame. And, if you ever need to remove the canvas from the frame and re-attach it, you'll have enough material to do that too.

Masterpiece® is a family-owned business operating in California since 1965 and producing the finest Stretcher Bars in North America. We deliver the highest quality and highest performing products in the business. We are widely recognized as the nation's leader and trendsetter of professional quality fine-art canvas. We own several patents that make our products perform superior to any other on the market. Once you touch one of our products, you'll immediately recognize our impeccable quality—and more importantly, so will your clients and those who acquire your art

Not until we are lost do we begin to understand ourselves. ♦ Henry David Thoreau

An emblematic figure in American literature, Henry David Thoreau was no stranger to the theme of self-discovery amidst nature's vast expanse. Known for his retreat into the wilderness of Walden Pond, Thoreau believed in the transformative power of solitude and introspection. He challenged the familiar, often suggesting that detachment from the known was the first step to profound self-awareness.

The act of creation often parallels this voyage into the unknown. We might encounter moments of doubt, moments when the direction of our work or the purpose of our efforts seems unclear. Yet, it's in these uncertain spaces that true growth occurs. By confronting and navigating these internal landscapes, we uncover layers of ourselves previously unexplored, enriching our art and deepening our connection to our craft.

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We are passionate about art, so we curated this enlightening quote and provide insight to it's meaning, plus to excite your senses, we included an inimitable portrait we made of Henry David Thoreau. Now get busy on your own!