Masterpiece stretcher bars are constructed from solid fir, using clear strips with no finger joints. The absence of the finger joints in even the longest bars insures that canvas tension is even throughout. These are our premium-grade stretchers. These professional grade stretcher bars resist warpage. Their tight fitting tongue-and-groove design creates a taut and sturdy support frame for cotton and linen canvas. Each bar measures 1-7/16" high × 2-1/4" deep. Note — Price is per bar, not pair. Masterpiece stretcher bars will not interlock with Fredrix brand stretcher bars.