Do you need to buy the flange and arm if you already have the previous one?
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No, and hook up is easy to you existing arm.
Was this Answer Helpful ?Not unless the one you have is defective.
Was this Answer Helpful ?no,you should be able to use the one you have.
Was this Answer Helpful ?Thank you for your question. Delta Faucet model # 75481D is a replacement for an existing showerhead. You will need to unscrew your showerhead from the shower arm and just screw the In2ition head onto your existing shower arm. Thanks. Jody
