Based on this product's specifications, here are some alternatives and similar models
Wall air inlet 200 mm stainless steel SpiroFlex CW200-N
Summary description:
Wall-mounted air inlet with 200 mm diameter in stainless steel from SpiroFlex, model CW200-N. Designed for supplying fresh air into ventilation systems, this inlet suits residential and light-commercial applications. Key attributes include durable stainless-steel construction, 200 mm nominal diameter, and compatibility with standard ventilation ducts for effective air delivery and corrosion resistance.