Every cable running through a raised floor leaves an opening. Each opening is a path for cold air to escape into the underfloor plenum rather than reach the servers that depend on it. As a result, your cooling system works harder, your energy bills climb, and your equipment runs hotter than it should. 

AirGuard raised floor grommets seal those openings. Think of a cable seal as a low-cost insurance policy against tens of thousands of dollars in potential damage from servers overheating.