16 X 20 X 1
Flanders PRE-PLEAT 40 LPD
https://www.amazon.com/NaturalAire-Pre-Pleat-Filter-1-Inch-12-Pack/dp/B008LR8H9A/ref=sr_1_3?crid=2RMXS0RG84OH7&keywords=flanders+16x20x1+lpd+prepleat&qid=1655814921&sprefix=flanders+16x20x1+lpd+prepleat%2Caps%2C47&sr=8-3
Ordered 2022-06-21
