This is a dust/water cover that fits over the external cowl grill.
 
It protects the inside of your water heater from unwanted debris and particles.
 
The Truma B14 Cover for Exhaust Cowl Grill is a replacement part needed when your original cover is damaged from the elements, an accident, etc.
 
Replacement part for Truma B10/14 water heaterTruma Cowl Cover - 70121.01
 
Keeps dust,water and debris out
 
Weight: 130 grams
 
Dimensions (approx.): 3 cm x 14 cm x 24 cm