The Von Duprin 990TP Thumbpiece Trim provides exterior operation for compatible 98/99 Series exit devices. The thumbpiece allows the door to be operated from the outside when unlocked, while the key controls the thumbpiece locking function.

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Manufacturer: Von Duprin
Part Number: 990TP
Product Name: Thumbpiece Trim
Door Thickness: >2-1/4" – ≤4-1/4"
Primary Function: Provides keyed exterior operation of through a thumbpiece trim
Application: Repair and maintenance of compatible Von Duprin 98/99 Series exit devices
OEM Part: Yes
Warranty: 3-year limited (electronic), Limited lifetime (mechanical)