[chio987]

in WinISD...when i have one port it says it needs to be 23.25" long and has a RPV of about 101 ft/s but when i add a second port the vent length goes to 51.95" with a RPV of about 51 ft/s .....my question is...is the 51.95" TOTAL port length for both so each port is 25.975" long or is EACH PORT 51.95" long

Thanks

[z-lite]

Each port would be 51.95" long