d shape seat MATCH by measurement

Short Length  424 mm D shape toilet seat
Short Length 424 mm Long 362 mm wide D shape toilet seat
Middle Length 449 mm  D shape  toilet seat
Middle Length 449 mm Long 362 mm wide D shape toilet seat
Long Length 470 mm Long 362 mm wide D shape Toilet Seat
Short Length  421 mm D shape toilet seat
Slim Short 421 mm Long 366 mm wide D shape toilet seat
Slim Middle length D shape toilet seat
Slim Middle 449 mm long 366 mm wide D shape toilet seat
Long Length 463 mm D shape Toilet Seat
Slim Long Length 463 mm Long 366 mm wide D shape Toilet Seat
D shape 370 mm width toilet seat
D shape Rounded Toilet seat 406 -450 mm long 370 mm wide
D shape toilet seat 437 mm long 353 mm wide
D shape seat 437 mm long 353 mm wide
D shape seat with a toddle training insert seat
D shape seat 435 - 455 Long 360 mm width with a Toddler Training seat insert

Manufacturers measurement which we reflect all assume measurements are drawn from toilet pan rather than seat itself.

Length : centre line of hinge to front of toilet pan

Width : mid way side to side pan edge.

Hinge holes - mid hole to mid hole of toilet pan