User manuals are sorted by product serial number and model codes. The first 4 digits of the serial number represent the manufacture date (YYMM) eg, 2203-XXXX = March 2022 build date.
Models: TRH-300-GD/SD, TRH-460-GD/SD, TRH-850-GD/SD, TRH-XL-GD/SD
October 2023 - current (2310 - current)
Humiditherm Deflector Installation