Based on this product's specifications, here are some alternatives and similar models
Heat recovery ventilator SpiroFlex Rekuperator poziomy VENT CLEAR HD4 HR Comfort Plus 465 m3/h
Summary description:
SpiroFlex Rekuperator poziomy VENT CLEAR HD4 HR Comfort Plus 465 m3/h is a horizontal heat recovery ventilator designed for controlled ventilation with a nominal airflow of 465 m3/h. It provides heat recovery to improve energy efficiency, supports continuous air exchange for residential or small commercial spaces, and is suitable for ducted installation where balanced supply and extract airflow is required.