The most common accessory to hang shower curtain is simply a straight or bar rod. They are designed for straightaway hanging and come with the needed hardware for being attached to the walls. You get many standardized shower curtains for being used with such an arrangement. If the design of your shower needs just a rod going from one wall to another, this will work fine.

Curved shower rods can also be used the same way as straight shower rods but they are designed to have a curve in the middle, thus offering more shower space. Curtains for showers can securely be tucked in the tub to prevent spillage of water on the floor. Curved shower rods facilitate additional elbow room in a standard shower.
Then there are L shaped curtain rods that facilitate the bather to adjust the curtain in many different patterns. L shaped curtain rods are made from inch tubing that may be cut to different lengths. Bent sections of tubing are available to create shapes.
Oval shaped rings for shower curtain are shaped for being mounted on a pipe, wall or ceiling. These are helpful in giving you an oval shaped enclosure with your shower curtains.
You may get even a rectangular shape. Generally these are better suited for being used in a freestanding tub like a claw foot tub. Specifically designed curtains are available for such applications; otherwise you’ll need more of standard curtains for such an arrangement.
You may go for Neo angle shower curtain rods which may be cut to a desired size to fit your corner shower
Track shower rods that work like a train track are provided with tracking that is mounted on the ceiling. These have especially designed clips that are attached to the curtain and as you move the curtain these clips move along the provided tracks.
D shaped shower curtain rods comprise of a U shaped tubular section and a straight bar. The two are suitably assembled to get an enclosure in the shape of a D with the aid of your shower curtains. Such an arrangement may need a ceiling support and additional curtains for going around the curved part.
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