System Features Molded 2-inch glue-on hose adapter.For those custom installations where retaining the original defrost duct assembly makes sense, these glue on duct adapters are a great way to provide a convenient connection and interface with the 2” duct hose that is included with Vintage Air evaporator kits. Simply drill a 2” hole in the existing plenum and secure the adapter with epoxy or a suitable adhesive.Two are required for proper interface with Vintage Air evaporator kits. Vehicle Fitment warning California Proposition 65 arrow_drop_down WARNING: California proposition 65
