Compare layouts within the same footprint
E121 and E121 Double both measure 1210 × 465 × 170 mm in the catalogue. One has a single bowl; the other has two. Their waste connections and usable counter areas differ, so the overall width alone does not settle the choice.
Use offset bowls to plan storage
The E81, E91, E101 and E121 ranges include left and right offset versions. Confirm the side on the plan view. An offset bowl can free counter space on one side, but the bowl and trap still need space inside the cabinet.
Separate bowl position from tap-hole position
F4530 has left, right and centre tap-hole variants at 450 × 300 × 150 mm. These labels describe tap-hole position, and should not be confused with the left or right offset bowl versions.
Check the complete installation
For double bowls, review both waste positions, trap access and cabinet support. For offset models, compare the selected side with drawers and plumbing. Send the original model drawing with the cabinet plan when requesting approval.
Review E121 Double, E81 Left and the F4530 tap-hole variant.
Compare the waste and tap-hole drawings for the exact left, right or double-bowl variant.
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