#IAQ Recalculated fixture performance for 2" & 4" deep MERV-13 & MERV-14 filters using ASHRAE efficiency values and filter surface areas ( from Jim Rosenthal). Highest CADR with 4" MERV-14 (233 CFM). Download spreadsheet here: https://drive.google.com/file/d/10876l7wQnEMgXvk6rNdkifDWkJxTmRru/view?usp=drivesdk