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The YORK s1-4000-7141/c is a furnace roof jack designed to vent combustion gases from residential gas furnace installations through the roof. This unit accommodates a floor-to-flange height range of 99 inches to 120 inches, making it suitable for installations with varying ceiling heights or roof pitches. The roof jack provides a weathertight penetration point where the flue passes through the roof deck, protecting the structure from moisture intrusion and maintaining proper draft. Licensed HVAC technicians install this component as part of a complete B-vent or single-wall vent system termination.
This roof jack fits standard residential furnace venting applications where the floor-to-flange measurement falls between 99 inches and 120 inches. It is used in new construction and replacement venting projects where the existing flue termination height must be matched or a new penetration is being established. The adjustable range reduces the need for field cutting or custom fabrication in most standard residential installations.
Designed as an OEM-style replacement roof jack for residential gas furnace venting systems requiring a floor-to-flange height between 99 inches and 120 inches.
Installation should be performed by a licensed HVAC technician in accordance with local mechanical codes and the furnace manufacturer's venting instructions. Shut down and de-energize the furnace completely before disconnecting or replacing any venting components. Verify roof pitch compatibility and ensure proper flashing and sealing around the roof penetration to prevent water infiltration. Follow applicable provisions of the International Fuel Gas Code for vent termination clearances and height requirements.
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