The DLXX8310 Lennox Genuine OEM X8310 Expandable Replacement Filter 20x25x5 (1 Pack) was exactly what I had expected. I was originally concerned if the filter was manufactured by Lennox and rated MERV 11. The Technician that did our Annual PPD Heating Maintenance told me that the Atomic Filters filter I gave him to install was Lennox MERV 11 and matched the one in the Lennox Unit. Also, the Technician recommended that I change the filter every 3-months. By the way, I tried to purchase another filter to keep on hand for the next service maintenance, but Atomic Filters was "Sold Out". Hopefully, they will get some more so that I will be ready for my next Annual PPD A/C maintenance.
