16x21 3D Professional 2.5" Deep K2 Stretcher Frame Kit

True 21:16 Custom Proportion - 16x21 Size

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

32x42 • 48x63 • 64x84 • 80x105

• Super strong 3D™ Pro K2™ 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 2.5" 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

3D™ Pro 2.5 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 2.5" 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.

Sustainably Managed Forests Coexist with Mankind

We use lumber grown in the sustainable forests of the Pacific Northwest, where thereÕs more standing timber today than last century! There will always be a demand for wood pulp and fiber, but striking a harmonious balance with human coexistence is the essential strategy to which we subscribe. Sustainably managed forests increase our health and abundance of our forests which can be in harmony with this precious natural resource.

24x29 is the Canvas Size Needed for this 16x21 Frame

Please note that you will need a canvas that is at least 8 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.

Tight'n'Up™ Liquid Canvas Retensioner

One of our most appreciated products helps make your canvas tighter! Stretching a canvas tightly can be a challenge. Our Frame Kits include the Corner and Brace Keys that you will need to add tension, but Tight'n'Up™ Liquid Canvas Re-Tensioner is a way that you can use to add tension to the canvas without needed to use the keys. It canvas be sprayed on the back of a canvas to repair most canvas tension issues.

With Tight'n'Up™, you can add tension to just a small area, or a large area. Simply spray it lightly on the back and brush it into the canvas, and within seconds, your canvas becomes tighter and stays tighter. The more you use, the tighter it gets. Recommended for acrylic primed cotton or linen canvas. We do not recommend it for oil primed canvas because there are simply too many different types of oil primed canvas, but used conservatively at your own risk, it will tension any canvas.

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 qualityÑand more importantly, so will your clients and those who acquire your art

For years I've wanted to live according to everyone else's morals. I've forced myself to live like everyone else, to look like everyone else. I said what was necessary to join together, even when I felt separate. ♦ Mary Cassatt

The life and works of Mary Cassatt often stood at the crossroads of traditional expectations and personal aspirations. Her words here reflect a struggle that many, especially artists, can deeply relate to: the tension between societal conformity and individual authenticity. Living in an era where the roles of women were rigidly defined, Her decision to pursue art as a career and remain unmarried was viewed as audacious. Her relentless drive to express herself authentically, even amidst societal pressures, set her apart and paved the way for her iconic contributions to the world of Impressionism.

Artists today, like Cassatt, often find themselves torn between producing what's expected and unveiling what's truly within their hearts. Being part of the art world means we frequently balance the scales of public opinion with our own creative impulses. Her admission of attempting to fit in serves as a poignant reminder of the compromises we sometimes make. However, it's essential to remember that while society evolves, the authentic voice of an artist remains timeless. The challenge for us is to trust in our unique perspectives, just as she did, and recognize that true artistry often thrives in the spaces where we embrace our differences rather than mask them.

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We offer you these words of wisdom and our take on the message in hope to inspire your art. We also pay tribute by creating this unique portrait of Mary Cassatt. Go paint!