The Double L Group TopJet gravity insulated shutter minimizes air leakage and seals up tight with no cracks or spaces for air to come through, offering energy savings to the livestock industry. The design has counterweight louver blades made of 3/4” insulated board encased in fiberglass with an R-value of approximately 6. The counterweight louver blades are uniquely designed to open from the top, directing airflow up. When static pressure is created by ventilation fans, the TopJet gravity insulated shutter blades automatically open to exhaust the air. When fans stop, the counterweight closes the louver blades.
Double L Group TopJet gravity insulated shutter
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