If you are planning to cover your shower area from four sides, use rectangular shower curtain rods. Use curved shower curtain rods that will fit built-in tub units and various other shower units. You can also use crescent shower curtain rods that will fit your tub opening. There is also another type of shower curtain rods, which are called shower enlarger rod. You can use this rod when you require enlarging the shower area in your bath. Shower curtains come in different size and shape, as far as the rod width is concerned.
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