I have joked and poked fun at keeping the pleats up on social media. Here's the deal and this is pulled from a Liebert manual I believe, as they move approximately 600 cfm per ton. Short pleat construction increases filter integrity. Where possible keep the pleats vertical as horizontal pleats can collapse and fold over like a slinky or acccordian, swipe to next image to see a filter wall where this happened. In most cases in won't matter but in some it can. Just knowledge to keep in the back of your head. Happy HVACing #teachme

Posted by HVAC Know It All at 2021-03-12 13:42:35 UTC