Will it fit your toilet?
Compare your toilet with each seat below and choose the one that suits it.
How to measure your pan
- Pan length: From the midpoint between the two seat bolt holes to the front edge of the pan.
- Pan width: Across the widest part of the pan, outside edge to outside edge.
- Bolt-hole spacing: Centre to centre of the two seat bolt holes.
| Z1 Core | B5 Plus | |
|---|---|---|
| Shape | Elongated oval | U/D-shape |
| Seat size (length × width × height) | 508 × 468 × 130 mm | 470 × 381 × 123 mm |
| Seat opening (length × width) | about 300 × 210 mm | 284 × 185 mm |
| Bolt-hole spacing (supplier range) | 130 to 220 mm | 130 to 220 mm |
Shape labels describe the seat design. They don’t guarantee fit on every toilet.
Z1 Core width (468 mm) includes its side control panel.
Compare your pan’s length and width with each seat’s size, and check that your bolt-hole spacing falls within the seat’s range. Similar measurements don’t guarantee fit, because the space behind the seat also matters.