Based on this product's specifications, here are some alternatives and similar models
Induction/air inlet control valve MONROE KE-160 (model KE-160-3)
Summary description:
MONROE KE-160 is an induction/air inlet control valve designed for regulating airflow in ventilation and air-handling systems. Model KE-160-3 provides precise control of inlet air volume and is intended for installation in ductwork or intake assemblies. Use cases include commercial and industrial HVAC systems where controlled air admission and flow modulation are required.