Tjernlund GPAK-1 Vent SystemThe Tjernlund GPAK 1 Vent System is designed for reliable venting of fan assisted gas heaters. This high performance vent system ensures safe, efficient exhaust for residential heating setups and compact commercial spaces. With a 4" vent pipe diameter, it accommodates an input capacity of 45,000 to 120,000 BTU hr and supports vent runs up to 60 feet, making it a versatile choice for varied layouts. The GPAK 1 is a Type Vent System specifically

supporting efficient

Series: 8100 Series

Environment & finish: Gray finish with clear plastic cover

Operation: ON/OFF

tool-free installation with reliable grip

it is designed for seamless integration with standard Rheem furnace components and built for durability across seasons

210°F primary limit switch setpoint ensures rapid shutoff at critical temperature

5 mA of output current

With 18" leads

and outdoor equipment

Compact enclosure size: 2

3 flow characteristics while maintaining tight shut-off and repeatable operation