Seat base : 359mm at widest
Seat lid : 367mm at widest
 
Hinge centres to front rim adjustment :
with C0102G Top-Fix hinges : 441.5 - 450.5mm   (Keramag Renova D-Shape)
with C0202Y Bottom-Fix hinges : 431 - 461mm
with Adjustable Top-Fix hinges : 426.2 - 457.2mm