39x91 3D Pro 3.5" Deep K3 Stretcher Frame Kit

True 7:3 Extended Domino Proportion - 39x91 Size

This 39x91 is a unique Masterpiece size and 7:3 Extended Domino aspect ratio.

The 7:3 aspect ratio brings a bold and dramatic horizontal stretch, perfect for wide compositions that need to feel expansive and open. This format pulls the eye across the canvas, making it ideal for landscapes, cityscapes, or any scene where horizontal flow is essential. The narrow vertical space adds a layer of complexity, requiring careful use of vertical elements to maintain balance without overwhelming the composition.

There’s a natural tension in this ratio. The wide format invites exploration of the edges, creating a sense of openness, while the limited height keeps the scene intimate and controlled. It’s a format that encourages you to emphasize sweeping gestures, long vistas, or minimalist abstractions. It's great for conveying motion, distance, or the vastness of a scene, all within a strikingly sleek frame.

Explore other sizes in this same 7:3 aspect ratio:

12x28 • 15x35 • 18x42 • 21x49 • 24x56 • 27x63 • 30x70 • 33x77 • 36x84 • 42x98 • 45x105 • 48x112 • 51x119

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 39x91 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

Sustainability is about Reducing Deforestation

Choosing products made with sustainably sourced lumber is an important way for consumers to make a positive impact on the environment. By supporting sustainable forestry practices, we can help to reduce deforestation, promote biodiversity, and mitigate climate change. It's a simple and effective way to make a difference.

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.

49x101 is the Canvas Size Needed for this 39x91 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

The sun will not rise or set without my notice and thanks. ♦ Mary Cassatt

With a life steeped in artistry, Mary Cassatt's profound connection to the nuances of the world around her becomes evident through such reflections. The sun, a universal symbol of life, hope, and relentless perseverance, never escaped her vigilant gaze. By acknowledging each dawn and dusk, Cassatt conveys a mindfulness that many of us often forget in the haste of our busy lives.

This level of attention to the natural world isn't just about observation—it's about gratitude. We, too, find solace in the consistent ebb and flow of nature, drawing inspiration from its predictability amidst chaos. As the sun's rays paint the sky with hues of hope every morning and bid adieu with a tranquil palette every evening, we are reminded of the cyclical nature of life and art. Such moments push us to pause, reflect, and be grateful for the beauty that surrounds us and the capability we possess to capture and interpret it.

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Creativity is a dance between inspiration and innovation. Our own self portrait creation of Mary Cassatt twirls alongside these profound words, hoping to set the stage for your next artistic performance. Now go do your dance on the canvas!