Rock-Vent Transition Plate

The Transition Plate allows you to connect our Rock-Vent Class A to our Rock-Flex Chimney Liner or Rigid Chimney Liner in a masonry chimney restoration. The plate measures 18" x 18". An example installation when this plate is used is when a deteriorating masonry chimney is torn down to the attic. A liner, such as Rock-Flex, would be installed from the heating appliance to the Transition Anchor Plate, which is mounted to the top of the masonry chimney. Rock-Vent Class A chimney pipe would be installed on top of the Transition Plate upward to the required height. Measurement Chart: Rock-Vent Transition Plate 5” 6” 7” 8” A 5” 6” 7” 8” B 7.5” 8.5” 9.5” 10.5” C 2” 2” 2” 2” D 1.7” 1.7” 1.7” 1.7” *Due to many variables beyond our control, the installer should check actual parts for final dimensions.