Product details:

This adjustable roof jack vent kit is great for housing water heaters. Constructed of aluminum and includes an air inlet vent.32For manufactured housing water heatersIncludes air inlet ventAluminum construction.NoteSealed combustion heater kit must be installed in accordance with the instructions furnished with the manufactured housing direct vent gas water heaterNo other roof jack or air inlet assemblies are approved for installation with the manufactured housing direct vent gas water heater.