22-1/2" x 14-1/4" US version
Water saving 1.6 gallons per flush
CIAPM0 listed Minimum 6" Stud Wall Required for Installation .
Also required: Toilet seat & cover, In Wall Carrier and Flush actuator (not included). See below for options:
Toilet seat and cover (006021) Sold Separately. Click on Image to see full details of toilet seat & cover:
Choice of Geberit in-wall carrier or GroheDal in-wall carrier (sold separately) Click on Images to see full details of each in wall carrier: