35" to 63" Telescopic Roof Jack, 2.5"/12" pitch
Model: Alpine AH903664
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This roof jack is the only piece needed to vent your Alpine mobile home furnace. For proper fit, measure from the base of the furnace to the flange on the top of the roof. The roof jack can telescope within the range described for an exact fit. To adjust roof pitch, see the accessories for the appropriate roof wedge.
Note: Hydroment Sealant is the only substance approved for installation of roof jacks.