2010 ADAS 608.2.1 Transfer Type Shower Compartments
Transfer type shower compartments shall be 36 inches by 36 inches clear inside dimensions measured at the center points of opposing sides and shall have a 36 inch wide minimum entry on the face of the shower compartment. Clearance of 36 inches wide minimum by 48 inches long minimum measured from the control wall shall be provided.
Citation according to 2010 ADAS. Check your state’s accessibility laws. Some states such as California, Georgia and Florida have additional requirements and standards.