Based on this product's specifications, here are some alternatives and similar models
Concrete base plastic pad ELKO-BIS 340 (model 44408208)
Summary description:
Plastic pad for concrete base by ELKO-BIS, model 340 (MPN 44408208). Designed to be placed under a concrete foundation or base to provide separation and protection between the concrete surface and supported structure. Lightweight, durable polymer construction suitable for construction and installation tasks where a non-abrasive, insulating spacer is required.