Aprilaire 4028 Drain Trap Assembly 321894-709 verify the specific valve plate

verify the specific valve plate part number to ensure port alignment and clearance

this whole house air filter effectively captures 85% of pollen

Wide Application Range: Rated for -20 to +50 degrees Fahrenheit

Using this in a Natural Gas unit will result in improper combustion due to the orifice sizing

Key Benefits: Universal Voltage Compatibility: Engineered to handle a broad range of operational voltages

Aprilaire 4028 Drain Trap Assembly 321894-709 verify the specific valve plateThe Aprilaire 4028 Drain Trap Assembly is a critical replacement component designed specifically for the Aprilaire Model 800, 865, and 866 series steam humidifiers. This professional grade humidifier drain trap kit ensures the efficient removal of condensate, preventing water backup and protecting your HVAC system from potential moisture damage. Engineered for steam humidifier maintenance, the assembly includes a high durability Aprilaire 4028 trap, a