A rectangular shower curtain rod does not have to be difficult to find. Rectangular shower curtain rods are perfect for clawfoot tubs or other freestanding bath tubs. You can find bronze rectangular shower curtain rods, chrome rectangular shower curtain rods as well as nickel rectangular shower curtain rods. It's important that your shower rod fits your bathroom and the structure of your bathtub. There are many different types of rods on the market so no matter whether you're looking for a brass shower curtain rod, a double shower curtain rod, an oval shower curtain rod or a tension shower curtain rod, you're sure to find something that fits your needs just perfect. 
Pegasus Rectangular Shower Unit with Side Wall Support Polished Brass
"Contemplating the addition of a Shower unit is an effortless decision with the many selections available from Home Depot. A different look for your Shower unit is achieved with the addition of a code Gooseneck Spout. The unit in Polished Brass includes a Riser, rectangular Shower rod frame, and ceiling and wall support. It does not include a Shower Head, so that you may add your own decorative choice from the large BarClay collection." 
Pegasus Rectangular Shower Unit with Side Wall Support Polished Chrome
"Finish is Polished Chrome. Size is 54In. x 26In. 3/4In. Solid Brass Tubing. Washerless diverter bathcock 3 3/8In. centers. 60In. Riser & Shower Head included. 18In. wall support & 30In. ceiling support. Side wall support is fully reversible (left or right)" These rods can be found at homedepot.com
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