Von Duprin LD9975EO 4 US28 Grade 1 MTS Exit Device 628

Von Duprin LD9975EO 4 US28 Grade 1 Mts Exit Device 628 is engineered for optimal safety and efficiency in emergency situations. This Grade 1 Mortise Exit Bar features a 48-inch device designed specifically for exit-only applications, and it comes in a sleek satin aluminum clear anodized finish that enhances both aesthetic appeal and durability. Compatible with all types of single or double doors, the LD9975EO easily fits stock hollow metal doors with an 86 cutout, accommodating door stiles as narrow as 4 3/4 inches. The device includes a 3/4-inch anti-friction latch bolt that allows for field reversibility without removing the lock from the door, ensuring versatility and ease of installation. Its non-handed auxiliary bolt provides dependable deadlocking, while the adjustable bevel faceplate accommodates various door configurations. Designed to meet ANSI A156.3 – 2001 Grade 1 standards, this device is UL listed for panic exit hardware, making it a reliable choice for commercial applications. The LD9975EO is ideal for businesses seeking a robust and compliant exit solution, with an installation suitable for metal, wood, or aluminum storefront doors. With a limited three-year warranty, this exit device promises peace of mind and long-lasting performance.

Grade 1 Mts Exit Device 628

Grade 1 Mortise Exit Bar, 48" Device, Exit Only, Less Dogging, Satin Aluminum Clear Anodized Finish, Field Reversible

9875/9975 Mortise lock device for all types of single or double doors, UL listed for panic exit hardware. Fits stock hollow metal doors with 86 cutout and door stiles as narrow as 4 3⁄4" (121mm). The 7500 Mortise lock is equipped with a 3⁄4" (19mm) anti-friction latch bolt which is field reversible without removing the lock from the door. It has a non-handed auxiliary bolt for deadlocking and a faceplate with an adjustable bevel.

Devices are ANSI A156.3 – 2001 Grade 1

The 9975 Series is for all types of single or double doors and is UL listed for panic exit hardware.  Fits stock hollow metal doors with 86 cutout and door stiles as narrow as 4 3 /4" (121mm). 

• Device functions: Device ships EO/DT/NL. Field selectable. For TP, K or L remove NL drive screw from device.
• Device lengths: 3' 2'4' to 3' (711mm to 914 mm) Door size 4' 2'10" to 4' (864 mm to 1219 mm) Door size
• Device centerline from finished floor: 39 13/16" (1011 mm) 39 11/16" (1008 mm) with mullion
• Center case dimensions: 8" x 2 3/4" x2 3/8" (203mm x 70mm x 60mm)
• Mechanism case dimensions: 2 1/4" x 2 1/4" (57mm x 57mm)
• Projection: Pushbar neutral – 3 13/16" (97 mm) Pushbar depressed – 3 1/16" (78 mm)
• Fasteners & sex bolts (SNB): Includes screw pack for 1 3/4" (44mm) and 2 1/4" (57mm) thick metal or wood do

Resources

• 10 Things You Need to Know About the Von Duprin Chexit
• 98/9975-2 Series Wood Door Template
• 990TP/TP-BE/NL Trim 98/9975 Mortise Lock Device Installation Instructions
• QEL Data Sheet
• Von Duprin Finishes Chart