Our stretcher bars are either introverted or extroverted (high profile or low profile). The standard bars are about 3/4" deep and the heavy duty ones are roughly 1 1/2" deep.
Quality wood stretchers are the key to easy stretching and a, hopefully, warp-free life for a canvas. Whether standard bars or heavy duty we have selected the best quality for the smallest prices. Joints are tongue and cheek.. er.. tongue and groove - just like floor paneling.