Pentair 4 in. x 6 in. Metal Flue Collar | 77707-0076 Junction Boxes leak-resistant seal between the tank

leak-resistant seal between the tank body and its components

Never substitute an incorrect orifice — orifice bore diameter is fuel-type specific and directly affects combustion safety

it is time to replace

check the label on your filter tank or the original installation manual to confirm your unit is a 2009 or later build before ordering

Pentair 4 in. x 6 in. Metal Flue Collar | 77707-0076 Junction Boxes leak-resistant seal between the tankThe Pentair Metal Flue Collar (77707 0076) is the OEM replacement 4 inch x 6 inch venting adapter designed specifically for negative pressure vertical venting installations. IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high voltage components without proper certification. This metal flue collar