wooden in 3 depths – 16mm, 36mm, or 4.2 mm or customized size
Strong – but for larger canvases where the canvas tension will be greater, the thicker mm bars will be stronger than the narrower.
The 16mm depth is available in inch sizes, in 2-inch increments up to 40 inches. These 2 inch size bars (and the 21mm bars as well) are for artists who might need to match an inch-sized frame or an existing inch-sized painting where cm-sized canvases would be in partial fractions of inches, or for those who prefer Imperial measurements.
The 36mm depth is available in inch sizes, in 2-inch increments up to 54 inches. These two narrow bars are not available in as long lengths as the deeper bars because they are not strong enough to be be that long without warping.
The 42mm depth is available in 10cm increments up to 200cm long.
Strong interlocking corners and a space for a wooden corner wedge.