Based on this product's specifications, here are some alternatives and similar models
Wall mount bracket BLOW 76-943# angled side support for antenna or equipment, antique finish
Summary description:
BLOW 76-943# is a wall-mounted angled side bracket designed to support antennas or other lightweight equipment. The bent side design provides offset mounting from the wall; the antique finish suits visible installations. Intended for secure attachment to vertical surfaces, it’s suitable for outdoor or indoor mounting where stable lateral support is required.