Replacement differential / pressure switch for Harman stoves. Also, known as a vacuum switch. Click on the photo to enlarge and view other angles. Fits the following Harman pellet stove models:
Accentra FS (Cast)
Accentra Insert
Advance
HF60
P35i Pellet Insert
Pellet Pro 38 Plus (P38+)
P43
P61
P61A
P68
PC45
PF100
PB105
XXV Pellet Stove
Harman part # 3-20-6866
Replaces Harman part number 3-20-9301 and 3-20-3433.
OEM Harman Part