Based on this product's specifications, here are some alternatives and similar models
Surface-Mounted Hermetic Junction Box ELEKTROPLAST PH-1B.1 108 mm gray
Summary description:
Surface-mounted hermetic junction box ELEKTROPLAST PH-1B.1, 108 mm diameter, gray. Designed for protecting electrical connections and splices in environments requiring moisture and dust resistance. Suitable for indoor and sheltered outdoor installations where a sealed enclosure is needed for cable joints, terminal blocks or small electronic components.