Based on this product's specifications, here are some alternatives and similar models
Mounting Spacer ALPAR L-250 with Expansion Plug G305 — L‑250 spacer for fixed-distance mounting
Summary description:
ALPAR mounting spacer L-250 with expansion plug G305 is a fixed-distance spacer designed for secure mounting of fixtures where a 250 mm spacer length is required. Includes an expansion (wedge) plug for anchoring in solid substrates. Suitable for installations that need consistent separation between mounted elements, such as facade fittings, railings, or equipment brackets.