31x50 3D Pro 3.5" Deep K3 Stretcher Frame Kit

True Golden Mean Proportion - 31x50 Size

This 31x50 size is one of our Golden Mean sizes, considered the most pleasing shape to the eye!

The Golden Ratio, also known as the Golden Mean or Divine Proportion, is considered the most aesthetically pleasing proportion to the human eye. This proportion has been used in art and architecture for thousands of years, and countless examples can be found in nature, plant life, galaxies, and the human body. The Golden Mean can also be used as a guide to arrange your subjects on the canvas in concert with other Golden Mean shapes like an ellipse, star, triangle, and spiral, resulting in intriguing compositions. Many famous artists, such as Michelangelo, Da Vinci, Mondrian, Botticelli, Dali, and Seurat, have used this proportion in their art, and many contemporary artists continue to use it exclusively. The Golden Ratio can even produce some mathematically intriguing relationships that relate directly to art, architecture, science, and human intrigue. If you're looking for a challenge and inspiration, consider using a canvas in the proportion of the Golden Mean to create a composition that will come alive in the most intriguing ways!

Explore other sizes in this same 50:31 aspect ratio:

12x19 • 15x24 • 16x26 • 18x29 • 20x32 • 23x37 • 26x42 • 28x45 • 30x48 • 33x53 • 36x58 • 37x60 • 39x63 • 42x68 • 46x74 • 47x76 • 50x81 • 52x84 • 60x96 • 60x97 • 63x102 • 68x110 • 71x115 • 73x118

• Super strong 3D™ Pro K3™ Stretcher Bar is a very popular among contemporary artists whose painting will be displayed without a frame.
• For this 31x50 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

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.

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.

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 strengthÑminimizing risks of cracks, splits, or bendsÑbut 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.

41x60 is the Canvas Size Needed for this 31x50 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.

Tight'n'Up™ Liquid Canvas Retensioner

One of our most appreciated products helps make your canvas tighter! Stretching a canvas tightly can be a challenge. Our Frame Kits include the Corner and Brace Keys that you will need to add tension, but Tight'n'Up™ Liquid Canvas Re-Tensioner is a way that you can use to add tension to the canvas without needed to use the keys. It canvas 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. Recommended for acrylic primed cotton or linen canvas. We do not recommend it for oil primed canvas because there are simply too many different types of oil primed canvas, but used conservatively at your own risk, it will tension any canvas.

From the heart of California, Masterpiece® has been weaving a legacy since 1965, curating the best Stretcher Bars North America has witnessed. Our unwavering dedication to quality and innovation has cast us in the limelight as the trendsetting stalwarts in the realm of fine-art canvases. The patents we hold are not just certificates but validations of our pursuit of perfection. Engage with our creations and feel the promise of unmatched quality, a promise that resonates with your clients and every future beholder of your masterpiece.

When looking at any significant work of art, remember that a more significant one probably has had to be sacrificed. ♦ Paul Klee

A central figure in modern art, Paul Klee had an unparalleled understanding of the artistic process's intricacies. This quote echoes the countless hours of labor, endless revisions, and the myriad ideas that an artist might abandon or transform before settling on a final creation. Klee suggests the depth of commitment, the choices made, and the potential masterpieces that never came to fruition, all for the sake of birthing the piece in front of us.

It's a sentiment many artists can deeply relate to. In our art careers, the paths we choose inevitably mean leaving other paths unexplored. Every canvas we present is a culmination of choices, some of which might have been difficult to make. For every artwork displayed in a gallery or a studio, there might be countless others that were reimagined, overpainted, or remained hidden, never seeing the light of day. Klee's words remind us to value the unseen journey behind every artwork and understand that the creative process often involves sacrifice, prioritization, and the courage to let go. But in that process, we find our voice, our style, and our most authentic self.

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We've curated this inspirational quote and our take on the message, plus a unique portrait we created of Paul Klee, celebrating the timeless ever-evolving act of creation. Go create your own masterpiece!