Based on this product's specifications, here are some alternatives and similar models
KOMPONENTUM DIFFUSOR BOX DN160-12X75 for Ventilation Systems
Summary description:
The KOMPONENTUM DIFFUSOR BOX DN160-12X75 is a high-quality ventilation plenum box designed for efficient air distribution. Featuring a 160mm main connection and 12 ports for 75mm flexible ducts, this unit ensures optimal airflow management in residential and commercial ventilation systems. Its robust construction provides durability and reliable performance for air supply or extraction setups.