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.