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.
Shower rod kit. Make marks on the wall where you will connect the shower curtain rod. When hung, the bottom of the curtain should fall four to six inches below the top edge of the tub. This ensures that the water that hits the shower curtain drains into the tub and not onto the floor.