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.