Fireplace Liner Sizing Guide

The chart below uses a 10-1 ratio. A 10-1 ratio should be used for chimneys less than 25 feet in height and a 12-1 ratio for chimneys greater than 25 feet in height.



Fireplace Opening  &  Liner Size

Up to 600 sq. in. opening  =  9" Liner

601 - 760 sq. in. opening  =  10" Liner

761 - 942 sq. in. opening  =  11" Liner

943 - 1140 sq. in. opening  =  12" Liner

1141 - 1356 sq. in. opening  =  14" Liner

1357 - 1846 sq. in. opening  =  16" Liner



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