The difference between the cost price and the retail price of merchandise. Markup may be expressed in dollars or as a percent. If stated as a percent, it may be based on either cost price or retail price. Most retailers base markup on retail price.
Measure the entire shape of a curved shower rod if this is the style you have. Expect the measured width to be approximately 6 inches more than a standard curtain rod. Purchase a shower curtain with a 72-inch width, if available, to compensate for the additional width. If necessary, a 70-inch curtain width works as well. This is because the rods curve inward at the edges, making for an overall smaller width measurement.
Assume that the shower curtain will hang approximately 1-1/2 inches below the center of the rod and that you would like the curtain to hang 3 inches above the floor of the shower. Then the rod should be mounted with its center at 76-1/2 inches (72 + 1 1/2+ 3 = 76 1/2) above the floor.ou should measure the length of the shower curtain first. It should hang 3-4 inches below the edge of a tub, or a couple of inches longer than the step of a walk in shower. Extra long shower curtains are available should you need them. 1  The length of the shower curtain to be used.