Bryant/Carrier Replacement Filter for 50YD Geothermal Units (29-1/2x35-3/4x2") by Magnet by FiltersUSA Fits Bryant Carrier GT-PX two Stage Series Fits Model 064 & 072 CLM Size 36x29.5x2"(actual size 35-3/4x29-1/2x2) MERV 11 Pleated Hi Efficient Filter