Based on this product's specifications, here are some alternatives and similar models
Air intake grill ALNOR USAV-200 — aluminum construction, circular duct connection
Summary description:
ALNOR USAV-200 is an aluminum air intake grill designed for HVAC systems with circular duct connections. The product provides a durable, corrosion-resistant inlet for fresh air or supply air distribution. It is intended for use in residential and commercial ventilation installations where an aluminum intake with a standard circular connection is required for air handling units and ductwork.