17.5x21x4.5 MERV13 Filter

Media Repl Filt 21x24-1/2x5" M

PRIMARY CONTROL

17.5x21x5 MERV8 1400CFM Fltr

17.5x28x5 MERV8 Media Filter

21x21x5 MERV8 Media Filter

MERV 8,21wX 28hX 5 FILTER