Rear fan foam De Dietrich 7901521

Rear fan foam is a specialized sealing component used in heating appliances to reduce noise and vibration from the fan assembly. This foam pad helps dampen sound and prevents air leaks, contributing to quieter and more efficient boiler or burner operation. It is commonly needed during maintenance of gas burner parts or when replacing fan units. Using the correct rear fan foam ensures proper fit and long-lasting performance in your heating system.