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ETC/RTC — Tee Caps

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. The System Design and Installation Guide is an additional resource.

Amerivent FAQs

ETC/RTC — Tee Caps

The tee cap provides closure for the branch of the trunk of the tee.

Available sizes (inches)

ModelSize
3ETC3"
4ETC4"
5ETC5"
6ETC6"
7RTC7"
8RTC8"
9RTC9"
10RTC10"

Available sizes (inches)

ModelSizeAB
3ET3"7 1/8"4 1/8"
4ET4"8 7/8"4 5/8"
5ET5"10"5 1/4"
6ET6"11 1/2"5 3/4"
7RT7"13"6 1/2"
8RT8"14"6 7/8"
9RT9"15"7 3/4"
10RT10"16"8 1/16"
12RT12"17 9/16"9 3/4"
14RT14"24"11 3/4"
16RT16"26"13"
18RT18"28 1/2"14 1/4"
20RT20"30"15 1/2"
22RT22"33"16 3/4"
24RT24"36"18"
26RT26"38"19"
28RT28"40"20"
30RT30"42"21"