A-J Manufacturing, Inc.
The company's line of pressure relief doors prevent ductwork from imploding or exploding in the event of excess pressure. The PZ10 model and the VT-10 model are designed to open automatically 1 in. wg above normal operating system pressure. At the specified pressure setting, the doors permit immediate and unrestricted neutralization of the pressure differential between the inside and outside of the ductwork system.
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