Toto Aquila IV 12” Unifit trapsize outlet diameter seems small at 1.75". Should I be concerned?

[Madcaudex]

Just purchased a Toto Aquia IV MS446 with a 12" Unifit Rough-in adapter TSU48.12. The rough-in trapway outlet at the bottom seems small at 1.75" in diameter. Is this normal? Should I be concerned?

 

[Fitter30]

Totos has good pic of the adapter

Toilet Rough-ins and the Cleverness of TOTO’s Unifit Rough-in

This page educates our reader on what a toilet rough-in is, and how you can replace yours today!

www.totousa.com

 

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[Jeff H Young]

Look at how you are holding the tape . are you sure its 1 7/8? looks like you arent measuring correctly