Canvas Depth: 7/8″, Canvas relief: 5/16″ (Space between canvas and Bar). Raw Belgian Linen, 9.6 oz., Very Tight Weave, 40×36 Yarns per In. Torrey Pines is excellent for large works. Patented Precision Machined Keyable Stretcher Bars are 7/8″ deep by 1-1/2″ wide.