7680B6541 Coleman exterior roof jack extension 18 inches

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18" Roof Jack Extension For Coleman, and Revolv Gas Furnaces

Extends crown of roof jack up an extra 18 inches to clear drifting snow or down drafts which may cause pilot outages. For use with 4000 series Coleman roof jacks. Not adjustable. Outside pipe is 8-1/2" which fits over an 8-1/4" pipe. Inside pipe is 5-1/2" which fits over a 5-1/4" pipe.

To install crown, remove top and wide round section of crown and slip over extension pipe. Installation instructions included. Extensions should not be used or extend inside attic spaces. Use only above roofline.

Replaces part number 7680-6541.

View instruction sheet.