16x21 3D Pro 3.5" Deep K3 Stretcher Frame Kit

True 21:16 Custom Proportion - 16x21 Size

Explore other sizes in this same 21:16 aspect ratio:

32x42 • 48x63 • 64x84 • 80x105

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 16x21 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 Purify the Air

Our forests purify the air by filtering nearly 40% of the fossil fuel emissions humans create, and are critical to reducing global warming. More trees are needed on this planet, not fewer, for our own healthy human survival. Therefore, we use lumber grown in responsibly managed forests, so future generations can benefit from our responsible actions today.

26x31 is the Canvas Size Needed for this 16x21 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.

We are born weak, we need strength; helpless, we need aid; foolish, we need reason. All that we lack at birth, all that we need when we come to man's estate, is the gift of education. ♦ Jean-Jacques Rousseau

Jean-Jacques Rousseau, a towering figure of the Enlightenment era, was not only a philosopher but also a composer, botanist, and novelist. His works have left a profound impact on modern political, sociological, and educational thought. Born in Geneva in 1712, Rousseau's early life was filled with hardship and wanderings, with periods of both deep solitude and vibrant creativity. His emphasis on the intrinsic value of human nature and individual freedom deeply influences our understanding of the arts and the artist's place in society.

When Rousseau emphasizes the transformative power of education, he speaks from the core of his beliefs, asserting that nature gives us the basics, but it's education that refines us. Similarly, artists begin with raw talent, passion, and vision, but it's through learning, practicing, and embracing feedback that we elevate our craft. The canvas, paint, and brush are merely tools; it's the constant learning and evolution, fueled by education, that allows us to convey our deepest emotions and most profound insights. We, through our creative efforts, become the embodiment of Rousseau's belief in the potential of education to elevate the human spirit.

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Creativity is the heart of what we both do. So we've curated this empowering quote and some background. And, in our own act of creation, we provide this unique portrayal we made of Jean-Jacques Rousseau.