Review on NavePoint 1U Blank Rack Mount Panel for Optimal IT Server and Network Ventilation by Swami Alcaraz

That sucks. Another piece of instant junk from Navepoint. These vents are just over 1U, so they're completely useless. Assuming you have an element above and below the assigned rack block, you should mix them in between the elements in the blocks above and below to make them match. I've tried several 1U blanks and the result is always the same. Strange. Choose another product. Navepoint disappoints throughout