According to experts at NC Basket Works , you need two measurements: Measure the width of the holes in the frame.

Measure from the center of one hole to the center of the next. Common Sizes Hole Diameter Hole Spacing (Center to Center) Super Fine For Pressed Cane Webbing:

Often made of resin or plastic, this is better for outdoor furniture as it resists moisture and UV damage more effectively than natural fibers. 3. How to Measure for the Correct Size