Vestal Outside Air Kit (OAK)
Fresh Air Kit only (FAKVO)
Combustion Air Kit 2"x4"x8" (RMR806)
Air Kit Extension 2"x4"x8" (RMR807)
Combustion Air Kit 4"x4"8" (RMR808)
Air Kit Extension 4"x4"x8" (RMR809)
Outside Air Kit Rear Wall 3" (OAKRW)
Outside Air Kit Side Wall 3" (OAKSW)