Based on this product's specifications, here are some alternatives and similar models
Connection box DAHUA PFA6400S — aluminium/SECC, white, 279.2×130.7×248 mm, load 8000 kg
Summary description:
DAHUA PFA6400S connection box for CCTV installations. White aluminium/SECC housing with dimensions 279.2 × 130.7 × 248 mm and maximum weight capacity 8000 kg. Designed to protect cable terminations and mounting interfaces, it suits outdoor and indoor camera junctions and provides robust mechanical support. Supplied as 1 piece per pack.