UHEPA (Under Header Extra Panel Assembly)

Record

Dual Independent Drive (DID)

5143 is a 5103 configuration with dual drives which are completely independent
This allows for inserting Center Under Header Extra Panel Assembly (UHEPAC)
5143 is the only available configuration for DID

5100 Series Automatic Sliding Door Unit, Bipart with Extra O Panel all under the header.

an under header extra panel assembly is shown in red