Fits Aprilaire 550, 558.
Includes 1 x 10 water panel + 1 x 4226 feed tube + 1 x 4231 yellow
orifice + 1 x 4004 inline strainer + 1 x 4217 scale control insert + 1 x 4218 water distribution
tray + 1 x 4223 drain spud
orifice + 1 x 4004 inline strainer + 1 x 4217 scale control insert + 1 x 4218 water distribution
tray + 1 x 4223 drain spud