Based on this product's specifications, here are some alternatives and similar models
Leveling Foot for Rack Cabinet PULSAR RAN — adjustable support for server/RACK enclosures
Summary description:
PULSAR RAN leveling foot is an adjustable support element designed for standing rack (RACK) cabinets. It provides stable height adjustment and floor compensation for server enclosures, network cabinets and telecommunication racks. The part is intended to improve cabinet stability on uneven surfaces, simplify installation and alignment, and protect floors from direct load.