Lennox ML193UHE furnace filter sizes
ML193UHE furnaces take 16 x 25 x 1 or 20 x 25 x 1 filters, depending on cabinet width and return.
Pick your full model number below for the exact size.
A 16 x 25 x 1 filter (side return) or a 16 x 25 x 1 filter (bottom return)
A 16 x 25 x 1 filter (side return) or a 20 x 25 x 1 filter (bottom return)