33x36 3D Pro 3.5" Deep K3 Stretcher Frame Kit

True 12:11 Near Square Proportion - 33x36 Size

This large 33x36 near square size is based in the 12:11 aspect ratio.

The 12:11 aspect ratio offers a subtle shift from a perfect square, creating just enough asymmetry to add tension and intrigue to a composition. This near-square format gives a slight horizontal or vertical emphasis, depending on orientation, allowing for balance while introducing a hint of movement or expansion.

This ratio works well when aiming to create compositions that feel stable but not static. It’s ideal for portraits, still life, or minimalist scenes where balance is key, but a perfect square might feel too formal or constrained. The slight elongation invites exploration of how space is used without overwhelming the viewer, making it a versatile choice for pieces that require a quiet, understated energy.

Explore other sizes in this same 12:11 aspect ratio:

110x120 • 11x12 • 22x24 • 44x48 • 55x60 • 66x72 • 77x84 • 88x96 • 99x108

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 33x36 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

Sustainably Managed Forests Inhale and Exhale

The world's forests are essential to human survival. Forests inhale carbon dioxide for the earth, and exhale oxygen essential for life. When we speak of the sustainable forest strategy of ensuring that more timber will exist in the same forest land than exists today, this is the only viable plan for the future of humanity. For this reason, we use only lumber from the sustainable forests of Oregon, Washington, and California, where there’s more standing timber today than last century!

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.

43x46 is the Canvas Size Needed for this 33x36 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.

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.

The soul desires to remain with its body, because, without the organic instruments of that body, it can neither act, nor feel anything. ♦ Leonardo da Vinci

Leonardo da Vinci, a polymath who was an artist, scientist, engineer, and anatomist. He was passionately connected between the tangible and the intangible. While he meticulously sketched the sinews and bones of the human form, he equally contemplated the ethereal essence that animated it. His insights weren't just about the physical, but also the ineffable spirit that breathed life into matter.

This understanding takes on a profound meaning for artists who sculpt, or paint. Our hands become the medium through which our innermost emotions and thoughts manifest. The canvas, the clay, the notes - they are lifeless without the spirit animating them. Just as the soul finds expression through the body, our art comes alive when we pour our essence into it.

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With a nod to Leonardo da Vinci, we present these words of wisdom and our own custom crafted portrait. Let this fusion stoke your creative fires. Dive into your art!