Based on this product's specifications, here are some alternatives and similar models
2-to-1 SAT/UHF/VHF Combiner F-Connector, OEM model SAT/UHF-VHF
Summary description:
Passive 2-to-1 combiner for SAT (satellite), UHF and VHF signals with F-type connectors. Designed to merge two inputs into a single output for distribution or connection to a receiver or amplifier. Suitable for installations where satellite and terrestrial (UHF/VHF) signals must share a feed line. Offers compact OEM form factor for indoor or enclosure mounting.