Based on this product's specifications, here are some alternatives and similar models
Signal Cover Simet PS1 end Multiwall (model 37165008) for cable trunking systems
Summary description:
Simet PS1 end signal cover (model 37165008) is an accessory designed for Multiwall cable trunking systems. This end cap provides a visible signal marker for the termination point of a trunking run and protects cable ends from dust and mechanical contact. Suitable for installation on compatible Simet Multiwall profiles in residential and commercial electrical installations.