Based on this product's specifications, here are some alternatives and similar models
Mounting rail Rittal SZ 4169.000, steel, silver, for TS 8/SE, 23 x 23 mm, depth 295 mm
Summary description:
Rittal SZ 4169.000 is a steel mounting rail in silver finish designed for use with TS 8 and SE enclosures. The profile measures 23 x 23 mm and fits installations with a depth of 295 mm. It provides a durable mounting solution for electrical and control components in cabinets and racks and is supplied in packs of 12.