15mm between hinges Not Suitable for wall hung or back to wall toilet as it has a bottom fitting - Please check the dimensions for compatibility with your toilet Simple and easy to install Brand new with clean and easy wipe smooth surface solid zinc hinges polyurethane finish suitable for all water closet basins with clean and easy wipe smooth surface size: 18 inch x 14 1/2 inch x 2 1/2 inch (4318mm x 3683mm x 635mm)