Aprilaire 4793 Maintenance Kit. For Model 550 Humidifier
- Tune Up Kit For Aprilaire Model 550 Series Humidifiers (Part # 4793)
- This Tune-Up Kit works for whole house small bypass humidifiers - models 550, 550A and 558
- This kit contains everything you need to maintain your Aprilaire humidifier
- The kit includes:# -10 Water Panel (QTY 1) - 4226-Feed Tube Assembly With 4184 Nozzle (nozzle snaps into distribution tray) - 4231-Yellow Orifice (comes nested in feed tube) -4004 -Inline Strainer (included in feed tube envelope) - Compression Nut and Ferule (included in feed tube envelope) - 4217-Scale Control Insert - 4218 -Water Distribution Tray -4184 -Nozzle
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