In the realm of data center hot aisle / cold aisle containment, I saw this data. Design results in efficiencies of 10 to 15% for blanking panels and hole stopping and 30% for aisle containment. This statement sounds incomplete and therefore unclear. What kind of efficiency could this be referring to? And 10 to 15% of what? And 30% of what? Anyone seen this data in context who can tell me what this is likely referring to?