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RM — Cap (7-12")

How to Specify

Using tables from the National Fuel Gas Code or our Sizing & Application Guide, determine the diameter of venting required. The Sizing & Application Guide also offers tips on good design including multi-appliance system sizing and design.

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RM — Cap (7-12")


Submittal Data (54 KB, PDF)
  • HC_RM_drwBarriers provided in cap opening spaced less than 1" are designed to resist entry of birds.

Cap dimensions 7–12" (inches

ModelSizeDim. ADim. B
7RM7"14 1/8"6 7/8"
8RM8"15 1/8"7"
10RM10"19 1/8"9"
12RM12"21 1/8"10 1/2"