Duplo WC L - Installation | Roca

DUPLO WC L - Concealed structure for toilet with dual flush cistern. Allows front or top activation. 90 ø / 110 ø elbow (Ref A890121010)
www.export.roca.com/products/...
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DUPLO WC BAJO VENTANA - Bastidor con cisterna empotrable de doble descarga para inodoro suspendido. Permite accionamiento frontal o superior. Codo de 90 ø / 110 ø (Ref A890121010)
www.roca.es/productos/duplo-w...

[@philshems]

This video contains a SERIOUS error at 41 seconds. The video gives a measurement of 225mm each side of the centre line for drilling the holes in the wall.
The dimensions should actually be 275mm (i.e a total width of 550mm).
If you follow the video instructions you will end up with holes in the wrong position, but too close to the correct position to enable you to drill another hole securely.
Guess how I found out...?!