Sone 303 Eng !exclusive! -

Yes, but refer to the "Eng" airflow specs. A 1 Sone fan moves significantly less air (CFM) than a 3 Sone fan. Check the static pressure rating on your original "303 Eng" datasheet. If it requires 200 CFM at 0.5 inches w.g., do not drop below that airflow to save noise.

Here is a review breakdown of the title usually associated with that ID: sone 303 eng