Based on this product's specifications, here are some alternatives and similar models
Siphon Aquaform 320-19021 — sanitary siphon for drainage, model 320-19021
Summary description:
Aquaform siphon model 320-19021 is a sanitary drainage component designed for removal of wastewater from fixtures. As a siphon it provides a water seal to prevent sewer gases entering the room and connects to drainage piping. Suitable for use with sinks, showers or bathroom fixtures where a compact siphon is required. Practical for installation and routine maintenance.