Ventilation grille / chimney hood for the boiler of the Hymer camper or caravan. Identical to the Truma BO vent guard (Baureihe 1, until February 1992), but with an image based on the Hymer logo. Product number: 70000-20400. Dimensions: 125 x 200 mm. Color and image can be adjusted as desired. We can spray it for you with car paint, for a small extra price. You can also easy spray it over yourself.