Aprilaire 4344 Plastic Door The Aprilaire 4344 air cleaner door is held in place by four plastic strikes that are attached to the back that Snap into the four corresponding latches on the outer housing. The Aprilaire 4344 air cleaner door includes the foam seal This even water distribution ensures maximum evaporation from your humidifier Comes with the door, four plastic pins and a foam seal. This is the "new Style" door for 4344 2200.Aprilaire #4344 replacement door