Rock-Vent Pellet Pipe Masonry Thimble Adapter
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Product Details
Specifications
The Rock-Vent Pellet Pipe Masonry Thimble Adapter is used to connect a flexible chimney liner tee snout to the Rock-Vent Pellet Pipe. The Masonry Adapter fits into a masonry thimble and has a black trim plate which provides a nice finished look on the appliance side. The other end connects to the flexible chimney liner tee snout for a direct connection. Available to fit 6", 7", or 8" diameter thimble holes and can connect to either a 3" or 4" flex liner tee snout. The collar at the end of the trim plate will connect directly to the Rock-Vent Pellet Pipe.
Measurement Chart:
Pellet Vent Masonry Adapter

Connects 3” Pellet Vent to 3” Flex Liner
6” Masonry | 7” Masonry | 8” Masonry | |
A | 3.75” | 3.75” | 3.75” |
B | 3” | 3” | 3” |
C | 5.9” | 6.9” | 7.9” |
D | 9” | 10” | 11” |
E | 8” | 8” | 8” |
Connects 4” Pellet Vent to 4” Flex Liner
6” Masonry | 7” Masonry | 8” Masonry | |
A | 4.75” | 4.75” | 4.75” |
B | 4” | 4” | 4” |
C | 5.9” | 6.9” | 7.9” |
D | 9” | 10” | 11” |
E | 8” | 8” | 8” |
*Due to many variables beyond our control, the installer should check actual parts for final dimensions.
Product Details:
The Rock-Vent Pellet Pipe Masonry Thimble Adapter is used to connect a flexible chimney liner tee snout to the Rock-Vent Pellet Pipe. The Masonry Adapter fits into a masonry thimble and has a black trim plate which provides a nice finished look on the appliance side. The other end connects to the flexible chimney liner tee snout for a direct connection. Available to fit 6", 7", or 8" diameter thimble holes and can connect to either a 3" or 4" flex liner tee snout. The collar at the end of the trim plate will connect directly to the Rock-Vent Pellet Pipe.
Measurement Chart:
Pellet Vent Masonry Adapter

Connects 3” Pellet Vent to 3” Flex Liner
6” Masonry | 7” Masonry | 8” Masonry | |
A | 3.75” | 3.75” | 3.75” |
B | 3” | 3” | 3” |
C | 5.9” | 6.9” | 7.9” |
D | 9” | 10” | 11” |
E | 8” | 8” | 8” |
Connects 4” Pellet Vent to 4” Flex Liner
6” Masonry | 7” Masonry | 8” Masonry | |
A | 4.75” | 4.75” | 4.75” |
B | 4” | 4” | 4” |
C | 5.9” | 6.9” | 7.9” |
D | 9” | 10” | 11” |
E | 8” | 8” | 8” |
*Due to many variables beyond our control, the installer should check actual parts for final dimensions.
Specifications:
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Our 316Ti flexible chimney liner and chimney liner components have passed the rigorous testing at the Underwriters Laboratories with best in class status and are UL Listed. So if you are looking for UL listed chimney liner sold directly to homeowners, then look no further than Rockford Chimney