| Genuine Aprilaire 4028 Drain Trap for Model 800 |
 Aprilaire 4028 Replacement Drain Trap Assembly for Aprilaire 800 Humidifiers. Supplemental Information: Aprilaire 4028 Drain Trap Diagram Related Products: Aprilaire 800 Steam Humidifier Aprilaire 213 Air Filter Price: 66.99 |