Modular spacers 48×25 for installing devices or rails. Supply: 20 units.. accessory / separate part category: mounting accessory – product or component type: spacer – range compatibility: Spacial CRN, Spacial S3CM, Spacial S3D – device application: multi-purpose – mounting location: devices or rails – product destination: from the basic chassis or mounting plate – quantity per set: set of 20.