28x45 3D Pro 3.5" Deep K3 Stretcher Frame Kit

True Golden Mean Proportion - 28x45 Size

This 28x45 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. Used in art and architecture for thousands of years, countless examples can be found in nature, plant life, galaxies, and the human body. It is often 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. If you're looking for a challenge or some inspiration, consider using a canvas in the proportion of the Golden Mean to create compositions that come alive in the most intriguing and eye-catching ways!

Explore other sizes in this same 45:28 aspect ratio:

12x19 • 15x24 • 16x26 • 18x29 • 20x32 • 23x37 • 26x42 • 30x48 • 31x50 • 33x53 • 36x58 • 37x60 • 39x63 • 42x68 • 46x74 • 47x76 • 50x81 • 52x84 • 60x96 • 60x97 • 63x102 • 68x110 • 71x115 • 73x118

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.

• Super strong 3D™ Pro K3™ Stretcher Bar is a very popular among contemporary artists whose painting will be displayed without a frame.
• For this 28x45 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

Sustainable Environment Promotes a Sustainable Economy

The use of lumber from sustainably managed forests is not only environmentally responsible, it also helps to support the economy and preserve jobs in the forestry industry. By choosing products made with sustainably sourced lumber, consumers can help to ensure that these industries remain strong and sustainable for years to come.

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.

38x55 is the Canvas Size Needed for this 28x45 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.

Rooted in California and flourishing since 1965, Masterpiece® takes pride in its family-led legacy of crafting North America's premier Stretcher Bars. Our quest for excellence isn't just a goal but a commitment, positioning us as the trailblazers in the domain of fine-art canvas. Our innovative patents have set new benchmarks, ensuring our offerings stand unmatched. Dive into the tactile experience of our products, and you'll instantly recognize the distinct Masterpiece® quality, a signature appreciated by both your clientele and future art connoisseurs.

An artist must never be a prisoner. Prisoner? An artist should never be a prisoner of himself, prisoner of style, prisoner of reputation, prisoner of success, etc. ♦ Henri Matisse

Henri Matisse, a pillar in the realm of modern art, was known not just for his iconic use of color, but also for his fearless evolution as an artist. Throughout his art career, Matisse was an epitome of adaptability and experimentation. From his early days as a Fauvist to his revolutionary cut-out period in his later years, he continually sought ways to express himself, refusing to be constrained by any particular style or medium.

Matisse's words serve as a guiding principle. We find ourselves often standing at the crossroads of expectations and personal expression. Do we adhere to the tried and tested, or venture into the unknown? Do we let the weight of past successes define our future, or do we allow our art to evolve organically? Matisse's exhortation reminds us that true creativity thrives when unshackled. While accolades and recognition are rewarding, they should not become golden cages that stifle our growth. As we wield our brushes, sculpt, or sketch, our primary allegiance should always be to our inner voice, ensuring that we remain true to ourselves, irrespective of external pressures. In doing so, we not only honor our own artistic spirit but also inspire those who witness our unbridled passion and dedication to craft.

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