This package comes with one black and one white louver to make sure you have the right color match for your RV. Also included is the inside cone vent fitting which accommodates 1-3/4” vent hose from the battery compartment.
* Directs battery box fumes outside the RV for safety
* Easy to replace
* Louver O.D.: 4-1/4″ x 4-1/4″