Description
Actual dimensions are 27.5 x 29.5 x 1.75. The Accumulair 28x30x2 Geothermal air filters are one-panel, two-piece frame 27.5 x 29.5 x 1.75 filters for Geothermal or GSHP (Ground Source Heat Pump) applications. The one-piece construction of Filter Hut's 28x30x2 Geothermal filter creates a stronger filter and eliminates bypass opportunity. Two-piece, one-panel design. Standardized to ASHRAE 52.2 grades. Notice: Sample filter picture displayed is not the actual dimensions and is shown for construction purposes.