Miller Nordyne 903656 Roof Jack Cap Assembly You will need to know

You will need to know the type of pipe you will use the Frostex heat tape on

The 9800 FlexFit Plug Kit is required for any heating cable circuit

Adjustments are made by sliding the 4" vent pipe up and down inside the roof jack

but this carries a dangerous drawback - in an emergency you may not be able to get out of your house

Lock from the inside with the twist of a button

Miller Nordyne 903656 Roof Jack Cap Assembly You will need to knowRedesigned all weather crown assembly helps minimize pilot light blow outs Factory Replacement item Easy Installation Instruction included Fits Miller, Intertherm, Nordyne & Broan Furnace with model #'s that start with MI, MBHA, MGBA, MGBB, MGHA, MGHB, MMBA, MMBB, MMHA, MMHB, MSBA, MSBB, MSHA & MSHB Fits Miller, Intertherm, Nordyne & Broan Furnace with model #'s that start with MI, MBHA, MGBA, MGBB, MGHA, MGHB, MMBA, MMBB, MMHA, MMHB, MSBA, MSBB, MSHA