27" to 47" Telescopic Roof Jack, 2.5"/12" Pitch
Model: Alpine AH903663
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. Note: Hydroment Sealant is the only substance approved for installation of roof jacks.
The roof jack can telescope within the range described. To adjust roof pitch, see the accessories for the appropriate roof wedge.