Purchased from Amazon Link Below for a 20 inch 
Photo is of one size available. It is shown to give a visual representation of the wooden frame.
Prices Vary Depending on Size on Amazon.
Purchased at the festival, set cost of $15.
Details 
	
Lengtha Available : 8.5inch, 16 inch, 20 inch
	
The magnetic frame ramin wood is from a circular economy so you can feel extra good about your purchase!
	
The modern design of our hanger will enhance your artwork, add more fun to your space.Each set contains 4 wooden strips, which embedded with strong magnets that sandwich your artwork firmly.
	
Easy to assemble,ready to hang，Just clamp your artwork in correct position then hang it up and You can change the Poster/Canvas/Painting at any time as you like
Amazon Link 
https://www.amazon.com/gp/product/B07QLM1H8M/ref=ppx_yo_dt_b_asin_title_o01_s02?ie=UTF8&psc=1