11x12 3D Pro 3.5" Deep K3 Stretcher Frame Kit

True 12:11 Near Square Proportion - 11x12 Size

This large 11x12 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 • 22x24 • 33x36 • 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

Finger Jointed Wood is not meant for Stretcher Bars

Solid wood makes the most dependable Stretcher Bar, because one homogeneous wood member is going to behave similarly across the entire length of the Bar. Whereas, with finger-jointed wood is made-up of multiple pieces of wood, sometimes on the actual joint itself, presenting multiple points of failure which no one can control.

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 add or reduce value to your final painting. The fact is, you don't want problems, and finger joints only increase that risk of the wood falling apart in the future.

The glue used to bind finger joints is a water based adhesive and when that wood is exposed to high humidity environments, particularly with exterior walls, the glue joints can give-up. 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 11x12 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 Forests Ensure More Wood for Communities

Using lumber from sustainably managed forests is not only the responsible thing to do, it's also a way to ensure that the wood products we rely on continue to be available in the future. By supporting sustainable forestry practices, we can help to ensure a steady supply of wood products while also protecting the environment and supporting local communities.

21x22 is the Canvas Size Needed for this 11x12 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.

With deep family ties and a legacy spanning since 1965 in California, Masterpiece® has been the epitome of unmatched quality in Stretcher Bars across North America. Our commitment to pioneering excellence has crowned us as the forerunners in the world of professional fine-art canvases. Bolstered by our patented innovations, our products exude a caliber that's in a league of its own. One touch, and the unparalleled quality becomes palpable, leaving an indelible impression on your clients and all future admirers of your art.

I hate to pose. I want people to forget my presence and act as they naturally would. ♦ Mary Cassatt

Mary Cassatt's pursuit of authenticity in her art is evident in her aversion to posed subjects. She sought the genuine, the unstaged, the candid moments that spoke volumes about a person's character and the era they lived in. Cassatt's focus was on capturing the essence of humanity in its most unguarded instances, revealing the raw and genuine emotions that make us all fundamentally human.

This perspective invites us to consider the honesty in our own creations. Do we, as artists, strive to depict the world as it genuinely is, or are we swayed by the allure of idealization? Cassatt's sentiment serves as a timeless reminder that sometimes the most powerful stories are told in the spaces between poses, in the fleeting glances and candid moments that define our shared experience.

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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 Mary Cassatt. Now get busy on your own!