This is a Von Duprin 9975L mortise exit device. It mounts on a door prepared for a mortise lock and gives a push bar for exit. Von Duprin is an Allegion brand. Part 9975L-NL-01 4 US4 RHR is the 48 Device, Night Latch Function, 01 Lever with Escutcheon Trim, Hex Dogging, Field Reversible version in Satin Brass.

• 48 Device
• Night Latch Function
• 01 Lever with Escutcheon Trim
• Hex Dogging
• Field Reversible
• Finish US4 Satin Brass
• Grade 1
• Part number 9975L-NL-01 4 US4 RHR