4" Z-Vent wall hung water heater vent kit with back-flow preventer

Kit includes: (1) 4″ termination hood, (1) 4″ x 90 degree elbow, (1) 4″ x 1′ vent pipe, (1) 4″ x 1.5′ vent pipe, (1) 4″ wall thimble, (1) 4″ universal adapter with back-flow preventer.
See Z-Vent Dimensional Data for a complete list of parts.