Based on this product's specifications, here are some alternatives and similar models
Omnitronic MIB-01 Mikrofonakustikbox — microphone acoustic isolation box, model MIB-01
Summary description:
Omnitronic MIB-01 Mikrofonakustikbox is an acoustic isolation box designed for microphone use. It provides a controlled acoustic environment to reduce room reflections and background noise during recording or live applications. Suitable for studio, podcasting, voiceover and mobile recording setups where improved isolation and clearer vocal capture are required.