Thank you for your question regarding the Delta Classic 400 - 36" X 36" Shower Wall Set and I am happy to help you today.
When installing both the base and surround, please use the Maintenance and Installation manual for the wall surround.
Please visit the link below to view the manual for this model:
If we can assist you with anything else going forward, please do not hesitate to give us a call at 800-355-2721.
Date published: 2018-05-04